Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Monday, May 20, 2019

5 Amazing Medical Techniques

Balloon Angioplasty
No one can dispute that science and medicine do not mix when you consider some of the amazing medical advancements made in the last 40 years. Consider for example the development of balloon angioplasty, a minimally invasive surgical technique where a medical balloon is guided through a major heart blood vessel then inflated to allow the blood vessel, previously restricted by plaque, to pump more blood.

Balloon Angioplasty 


Established in the late 1970s, balloon angioplasty, together with a small wire mesh tube called a stent, has led to thousands of heart patients getting the procedure to skip bypass heart surgery.

Not only has balloon angioplasty become a very popular and potentially life-saving surgery for heart patients, but in 2005, the FDA approved the same general idea for sinus sufferer's called balloon sinuplasty.

Medical Supplies 


Of course, with medical advancements come risks. That's why surgeons and their staff wear medical masks designed to reflect debris during laser surgery, such as those from a surgical supply store. USA Medical and Surgical Supplies is an all-inclusive medical supply store, which helps doctors or hospitals stock and re-stock medical supplies quickly. They carry products that the medical field has developed to help their patients in so many different ways.

Laser Surgery 


Another highly popular device is the use of a laser for surgery. A laser, which stands for light amplification by stimulated emission of radiation, is a device designed to put all the phases of a light's electric waves into a similar and narrow pattern so that the laser produces a very bright, very narrow, and precise beam of light.

Again, cardiologists were the first to use a laser for surgery, dating as far back as 1960, but it was an ophthalmologist, Dr. Gholam Peyman, who patented the use of lasers to correct eye problems that people are most familiar with.

According to Stanford University, laser surgery today, in addition to vision correction and the removal of cataracts, are used to remove tumors, seal blood vessels during surgery, and to remove warts, tattoos, birthmarks, and wrinkles.

Organ Transplants 


Another major advancement in the scientific/medical world is, of course, organ transplants. According to the United Network for Organ Sharing, the first successful kidney transplant took place way back in 1954, but liver, lung, heart, pancreas, and intestines have been transplanted, particularly since advancements in the late 1980s. These transplants later produced many ways to reduce the rejection of transplanted organs.

One of the problems, of course, is that you need a donor in order to transplant an organ. The majority of these come from accident victims that have consented with their state to be an organ donor in case of catastrophic events. Although you can sign up to be an organ donor in all 50 states, according to organdonor.gov statistics, only three out of every one thousand people die in a way that allows their organs to be used by someone else.

This brings up the future possibility of cloning. Although it seems like a brave new world with many ethical questions to answer, it seems inevitable that cloning, using stem cells to replace organs, will eventually be possible. It may be far into the future, but many forward-thinking scientists believe cloning at least some organs may be possible in the future.

Bionic Eye 


There could be many candidates for number five on our list, but we'll give the nod to the bionic eye.
A bionic eye, otherwise known as a visual prosthesis, is an electrical device that provides artificial vision to people who are currently blind but could previously see. Bionic eyes work by electrically stimulating parts of the brain that show flashes of light, called phospheres, which are flashes of light emitted through the brain, not through natural light. Think, for example, of seeing colors with your eyes closed within your mind.

Currently, a bionic eye provides a very limited image that, through training, allows a blind person with previous sight to be able to determine basic vision tasks such as identifying a person, object or a doorway, But in the future, the need for guide dogs and limited sight may be the prognosis for everyone.

Tuesday, February 5, 2019

Scientists Proposed a Nuclear 'Tunnelbot' to Hunt Life in Europa's Hidden Ocean

Tunnelbot

Nuclear Powered `Tunnelbot’

To produce a path through the thick shell of ice, researchers’ are intending to send a nuclear-powered `tunnelbot’ to Europa to hunt for life. Being the 4th largest of Jupiter’s 53 moons, Europa has been considered as the best choice in the solar system to introduce alien life. Europa, Jupiter’s icy moon is said to be somewhat smaller than Earth’s moon. Europa circles every 3.5 days around Jupiter and is tidally locked similar to the Earth’s moon. In this manner it is on the same side, wherein Europa tends to face Jupiter all the time. It is presumed to have an iron core, a surface ocean of salty water and a rocky mantle resembling the Earth. This ocean unlike on earth is considered to be adequately deep covering the entire surface of Europa. Moreover being away from the sun, the surface of the ocean is said to be globally frozen all over. Specialists are of the opinion that the hidden ocean encircling Europa and warmed by powerful tidal forces owing to the gravity of Jupiter could have favourable conditions for life.

Extra-Terrestrial Life

The plan has been initiated by scientists at NASA. The concept is to drill into the moon with the help of nuclear-powered robot tunnelbot, in an attempt to locate signs of aliens. This effort would provide an opportunity of probing below Jupiter’s moon Europa. According to the researchers, it would give them some insight of any aliens lurking there. The water concealed below Europa seems to be the likely areas for hidden alien life which could be trapped in a crust of ice thereby making it tough to explore. Hence, the researchers’ are set on in drilling through the crust and navigate for extra-terrestrial life. The researchers are of the opinion that the icy crust tends to conceal a kind of liquid water ocean which vents through that crust and could deliver the essential heat and chemical ingredients necessary for life in that particular ocean.

Tunnelbot

To get some insight below the thick layer of ice, researchers of NASA Glenn Research COMPASS team which is said to be a team of scientists and engineers around the country and engaged in resolving problems for NASA, believe that they can come up with tunnelbot. A meeting of the researchers had been conducted in December with the American Geophysical Union wherein a proposal had been presented for a tunnelbot. The tunnelbot could utilize nuclear power for melting a path through the shell of Europa.

 This would be carrying a cargo which could be helpful in tracing for indications for existing/nonexistent life Researchers are of the opinion that the tunnelbot can be utilized as an advanced nuclear device or some radioactive `general-purpose heat bricks of NASA to create heat and power. However, the radiation could bring about some design challenges. The tunnelbot can move in the ice on the frozen moon, hunting for small lakes with the shell or signs of life in the ice. As it tends to get immersed deeper it would branch out into a fiber optic cable. This could rise to the surface, setting up communication transmit at a depth of 3, 6 and 9 miles.

Mystery & Challenge

Researchers have mentioned that when the tunnelbot reaches the liquid ocean it would arrange cables or launch a device to refrain from falling through and to lock itself in position. At this point of time it is at an initial speculative proposal. The payload to sample Europa’s water and ice or how to get the tunnelbot on the moon has not yet been reckoned out by the researchers. This seems to be a significant mystery and challenge. This plan poses as an amazing insight into the future robotic mission to Europa. Moreover, ultimately it would also explore to see if the distant moon tends to have any indication of life.

American Geophysical Union

The researchers had mentioned in a proposal at the 2018 meeting of the American Geophysical Union that they had performed a concept study for a nuclear powered tunnelbot which would navigate through the ice shell reaching the ocean. The tunnelbot would assess the habitability of the ice shell together with the underlying ocean. The researchers have observed that there would be some issues with the plan. It comprises of how the tunnelbot tends to get all the way to that part of the world to be navigated. They have noted on `how initial deployment on the surface would occur, though not addressed and seems to be a challenge for further progress.

Two Prospects

Based on this, they have considered two prospects, one which could be driven by a nuclear reactor while the other through heat source bricks. Both utilize heat produced from these sources for melting through ice sources. However another issue also arises from embedding deep in the world. It would be complex for message to be sent through the ice. This means that the robot would be carrying cable that could send messages to and fro, to Earth. Moreover, researchers would also have to safeguard that the tunnelbot would have to leave a cable or even float on reaching the ocean ensuring that the cable does not touch the water while digging through the ice.

Preparing Two Analyses

According to Andrew Dombard associate professor of Earth and Environmental Sciences at the University of Illinois at Chicago, thickness of the ice is likely to be between 2 and 30 kilometres. This could be a main hurdle for anyone to overcome to explore these areas and have some insight of bio-signature representative of life on Europa.

Mr Dombard together with his colleagues had come up with a solution and believed that a nuclear powered tunnelbot would be the best solution for this plan. Mr Dombard had commented that they were not worried of how the tunnelbot would get to Europa or get deployed in the ice. They had presumed that it would get there and hence focused on its operation of descent to the ocean. The space agency has stated that it is preparing two analyses, comprising of one which would be landing on the surface exploring the distant moon within the next year.

Friday, December 15, 2017

Scientists Just Discovered Our First Known Interstellar Visitor And It’s Pretty Weird

First Known Interstellar Object – Solar System

Scientists have been working on the Pan-STARRS (Panoramic Survey Telescope and Rapid Response System) observatory at Haleakala, Hawaii just over a month back and had glimpses of something quite extraordinary, the first known interstellar object which had passed through the solar system.

They had distinguished observations together with details with the object for the past month and presently known as 11.2016 U1 `OUMUAMUA’, it seems to be the first object of this type. The `I’ signifies its interstellar origin – ISO. The interstellar `Oumuamua embarked in the solar system as though it had fallen from above, closing to within 0.25 AU from the sun which places it between the orbit of the sun and Mercury.



 However, there had been no clue of a tail as `Oumuamua' came near. The interstellar during its initial approach from above the solar system had been moving at a solid 15.8 miles per second – 25.5km/s and had bottomed out under the solar system after the gravity of the sun had pulled it in a different orbit. It is now on its way back out of the solar system on an altered route at an even higher speed of 44km/s.
 

Developing Follow-Up Strategy

 
Onumuamua – interstellar, is said to be quickly disappearing as it heads out of the solar system receding from the Sun as well as the Earth and receiving new observations quickly seems to be very vital. The IfA team comprising of those who had discovered 1l had prepared to follow up solar system discoveries quickly from Pan-STARRS, operated by the IfA, funded by NASA, according to Karen Meech, astronomer leading the investigative team who commented that they were capable of developing rapidly a follow-up strategy on a very short timescale.

It was exciting to think that the brief visit by Oumuamua had given them the opportunity to do the first representation of a sample from another solar system. Established on its observed characteristics, `Oumuamua is roughly the shape of a cigar with two of its axes around 80 meters across and the third 800 meters long. Its trail together with the speed recommends that it is not an ejected fragment of our own solar system at any earlier stage of its development.

 

Insight of the Cosmos

 
The research team tends to think that it is a distant prospect though this possibility could not be totally ruled out. They have speculated in fact that its encounter with our sun could have been the first instance interstellar `Oumuamua had encountered another star.

Though brief as it could have been, the complete encounter tends to remind us of the classic sci-fi book, `Rendezvous with Rama’ of Arthur C. Clarke wherein a massive cylindrical spacecraft on a quick approach in our own solar system had been explored by humans before it had continued on its journey to the Large Magellanic Cloud.

However, while we will not be seeing `Oumuamua’ again, the brief visit of the interstellar to our solar system has somewhat provided some insight of the cosmos to some extent.

Friday, October 27, 2017

Counting Raindrops Using Mobile Phone Towers

Mobile Phone Towers

Rainfall – Cellular Telecommunication Networks

Observing rainfall utilising cellular telecommunication networks could offer immense opportunity in reducing loss of life as well as economic loss by improving flood early caution system. This is essentially important in the case of densely populated areas wherein the rainfall information seems to be vital in order to control water management. It is not clear about the precise number of people who died in a series of mudslide on August 14th that had taken place in and the surrounding area of Freetown, the capital of Sierra Leone.

The upper estimate was said to be over a thousand. It is said that the region that had been swept away had not be evacuated mainly since no one was aware how much rain had really fallen earlier, according to rainfall expert Modeste Kacou, at Felix Houphouet-Boigny University in Abidjan in the vicinity of Ivory Coast. Rain devices seem to be scarce in Sierra Leone and satellites tend to identify rainfall in the tropics though estimates for small regions tend to be often inaccurate.

To make matter worse, these numbers tend to be calculated much later after it takes place. Several countries therefore are inclined to utilise cloud-scanning ground radar for measuring precipitation when it takes place though Sierra Leone does not have such radar.

Ivory Coast – Lack Rainfall Radar/Maintenance Cost

Ivory Coast tends to have a double of the GDP per person of Sierra Leone. However like most of West Africa, it tends to lack rainfall radar and maintenance cost would mean that the number of weather stations all over the world has been dropping thus making it difficult to forecast flash floods together with landslides also in some of the rich countries.

Hence it would be useful if some other alternative means of measuring rainfall probably an economical one which has a tendency of employing the prevailing widespread equipment could be formulated. There is such a system which is said to involve mobile-phone networks.The simple understanding is that rain tends to weaken electromagnetic signals.

Several mobile-phone towers particularly those in remote locations utilise microwaves in order to connect with the other towers on the network. A dip in the power of these microwaves tends to expose the presence of rain. The modus operandi does not seem to be as accurate as rooftop rain gauges. However as Dr Kacou points out that as transmission towers seem to be more numerous they seem to report their data automatically and cost meteorologist anything.
Well-Timed/Precise Surface Rainfall Measurement
Well-timed and precise surface rainfall measurements seem to be crucial for water resources management, weather prediction, agriculture, climate research together with ground authentication of satellite-based rainfall evaluations. But most of the land surface of the earth tends to lack this type of data. In several areas of the world, the density of surface rainfall evaluating networks has been quickly decreasing. This progress could probably be stabilized on utilising received signal level data from the huge number of microwave connection used all over the world in commercial cellular communication networks. Together with these types of links, radio signals proliferates from a transmitting antenna at a base station to a receiving antenna at another base station. Rain persuaded reduction and consequently path-averaged rainfall intensity could be retrieved from the attenuation signal between transmitter and receiver. Here it is seen how one network could be utilised in retrieving the space-time dynamics of rainfall for the whole country.

Friday, July 7, 2017

Existence Of Orbiting Supermassive Black Holes Confirmed

Black Holes

Research on Interaction Between Black Holes


Astronomers at The University of New Mexico have informed that for the first time they have accomplished observing and measuring the orbital motion between two supermassive black holes hundreds of millions of light years from Earth, a discovery said to be more than a decade in the creation. Krishma Bansal, graduate student of UNM Department of Physics & Astronomy is said to be the first-author on the paper `Constraining the Orbit of the Supermassive Black Hole Binary 0402 +379’ published recently in The Astrophysical Journal.

 Bansal together with UNM Professor Greg Taylor and colleagues at Stanford, the U.S. Naval Observatory and the Gemini Observatory had been researching on the interaction between these black holes for 12 years. Taylor had informed that for a long time they had been looking in space to attempt and find a pair of these supermassive black holes orbiting as a result of two galaxies reunion.

Though they conceived that this should be happening, no one had seen it till now. An international team of researchers in early 2016, comprising of a UNM former student working on LIGO project had identified the presence of gravitational waves endorsing the 100-year-old prediction of Albert Einstein, surprising the scientific community.

The Very Long Baseline Array - VLBA


These gravitational waves had been the consequence of two stellar mass black holes bumping in space within the Hubble time and due to the latest research, the scientists are now in a position of beginning to comprehend what leads up to the merger of supermassive black holes that tends to create ripples in the fabric of space-time.

 They have begun to learn regarding the evolution of galaxies together with the role these black holes tend to play in it. Researchers have been able to observe several frequencies of radio signals emitted by these supermassive black holes – SMBH by utilising the Very Long Baseline Array – VLBA, which is a system made up of 10 radio telescopes all over the U.S. and operated in Socorro, N.M. The astronomers, over a period of time had been capable of planning their course and confirm them as visual binary system.

It meant that they observed these black holes in orbit with one another. Bansal had informed that when Dr Taylor had handed over the data, he had been at the beginning of learning how to image and understand the same. As he learned there was data going back to 2003 and they planned it, determining they were orbiting one another and the same was thrilling.

An Unbelievable Achievement


The discovery for Taylor was the outcome of over 20 years of work with an unbelievable achievement considering the accuracy needed to pull off these measurements. At approximately 750 million light years from Earth, the galaxy called 0402+379 together with the supermassive black holes in it, were exceedingly isolated though were also at the precise distance from Earth and from each other to be observed.

Bansal has informed that these supermassive black holes tend to have a blend of mass of 15 billion times that of the sun or 15 billion solar masses. The incredible size of these black holes means that their orbital period is about 24,000 years. While the team has perceived them for a decade they have still to look out for the slimmest curvature in their orbit.

Roger W. Romani, professor of physics at Stanford University as well as the member of the research team had informed that if one imagines a snail on the recently discovered Earth-like planet orbiting Prixima Centauri – 4,243 light years away, moving at 1 cm per second, it is the lanky motion they are determining here.

Binary Stars Offer Incredible Insights


Taylor had commented that what they have been able in doing is a true chemical achievement over the 12-year period utilising the VLBA in achieving adequate resolution and accuracy in the astrometry to really see the orbit happening, has been a bit of victory in technology to have been able to do so. Though the technical accomplishment of this finding has been really remarkable, Bansal and Taylor have stated that the research could also teach them a lot more regarding the universe where galaxies come from and when they go.

An astronomer with the U.S. Naval Observatory, Bob Zavala stated that the orbits of binary stars offer incredible insights regarding stars and now we will be in a position of using same techniques in understanding supermassive black holes as well as the galaxies they tend to reside in. On-going observation of the orbit and interaction of these two supermassive black holes could be helpful in obtaining an improved understanding of what the future of our galaxy could look like.

 Presently the Andromeda galaxy that has a SMBH also at its core is said to be on a path to run into with our Milky Way. Bansal has informed that the research team would be taking another observation of the system in three or four years and confirm the motion and gain an accurate orbit. The team in the meantime, anticipates that the discovery would encourage related work from the other astronomers across the globe.

Wednesday, July 5, 2017

'Second Earth' Proxima b Could Support Alien Life After All


ALIEN LIFE ON THE PROXIBA B

People can’t take away that we belong to the mother Earth and we are her children. Now, ever since the space travel came into inception, man has travelled to far distant lands in search of water and life and air. They have been successful to some extent. The best thing is that the last summer the researchers and the other scientists announced that the nearest star which is close to our Earth can be considered as the Second Earth. The name has been given Proxima b. the report suggests that alien life is possible on this second earth as the conditions supports that of the survival of life. it is indeed a great news.

THE FACTS

Last year in the month of August, the news of Proxima B came into existence. The planet is not more than 4.2 light years from our own planet. The discovery has led to the conclusion that the second earth has the perfect atmosphere to receive enough sum of light in order to sustain the fluid water on the body. There were some questions raised after the discovery of the Proxima b. well, the first one to shoot was that it might be the cause of a huge amount of radiation due to the proximity. Finally, the conclusion from the scientists is that this new planet can support life.

THE DISTANCE

The planet is very cool and is only 25.2 trillion miles from our earth. It is a red dwarf planet which belongs to the system of Alpha Centauri. This second earth is now a part of the Star shot project. The name is given as it is almost the same size of our own earth. The atmosphere is considered to be the same as that of our own earth. To break the barriers of climate’s knowledge, the scientists from the University of Exeter are doing their research.

THE WORKING

The Met office unified model have been used in order to understand the climate of the second earth. This is a great step as the weather pattern is the most important part of the planet. It will ensure whether life is possible or not. The weather is almost similar that of the earth. So, life is habitable on this second earth. The atmosphere comprised of carbon dioxide traces. So, life is possible on this planet.

THE FURTURE

The future is unpredictable but still we live with our hopes. This is what makes our lives more enchanting and give us one more reason to live another day. In the near future, there may be experiments held on the grounds of the second planet whether life can rally sustain with the elements found on the surface of the planet. The temperature of the planet is between -90 degree Celsius to 30 degree Celsius. The presence of liquid water makes the possibility even clearer.

Tuesday, July 4, 2017

Your Guide to Solving the Next Online Viral Maths Problem

Precise Means of Online Equations - Explained

Several times we may have come across an online post or a fragment of a social media feed stating something such as `This math Problem is Stumping the whole Internet & Can You Solve It? Or Apparently 9 out of 10 people get this wrong. Do you know the answer?

‘At the core of the post there tends to lie numbers and symbols. Irrespective of how hard you may tend to try, it may seem impossible to accept the challenges. One may attempt to do so and on checking on the comment sector you are likely to get to know that some have agreed with your answers while the others tend to have a different point of view. The precise means of approaching these online equations with the least of hassle is explained below:

Language of Mathematics


We tend to read from left to right in the English language and hence it seems natural to view mathematical equations in the same manner. However one would not try to read Arabic or Mandarin in the same way nor would they try to do so with the discrete language of mathematics. In order to be maths-literate, it is essential to comprehend some of the applicable rules regarding spelling and grammar in mathematics.

 A set of firm rules called the order of operations tends to express the precise arithmetical grammar wherein it conveys to us the system in which the mathematical operations need to be performed such as addition and multiplication when they both appear in an equation. The mnemonic BODMAS – Brackets, Order, Division, Multiplication, Addition, and Subtraction, in Australia tends to teach students in assisting them to recall the correct order.

In BODMAS, the order tends to refer to mathematical powers like squared, cube or square root. This could be taught in other countries as PEMDAS, BEDMAS or BIDMAS though all these may come down to precisely the same thing. For instance, it would mean that if we have an equation containing addition as well as multiplication we tend to carry out multiplication first irrespective of the order where they are written.
While considering the equations:
  • (a) 3 x 4 + 2 
  • (b) 2 + 3 x 4
When BODMAS is applied we see that these equations are precisely the same or equivalent and in both the cases we tend to calculate 3x4=12 and then calculate 12+2=14. However some may tend to get an incorrect answer for the second equation since they would have tried solving it from left to right. They may do the addition first (2+3=5) and thereafter multiplication of (5x4) in order to get a wrong answer of 20.

Brackets tend to make a difference


It is here where the brackets tend to be beneficial segment of arithmetical punctuation. A well placed bracket in maths could change the calculation completely. They are utilised in providing a specific part of an equation and we always carry out the calculation within the bracket before dealing with what is outside the bracket. If brackets are introduced around the addition in equation in the above equations we then tend to have two new equations namely
  • (c) 3x(4+2) 
  • (d) (2+3)x4

Correct Understanding of Operation


These equations are not equivalent to each other and in both the cases, the bracket conveys to us to carry out the addition before doing the multiplication. This would mean that we have to compute 3x6 for (c) and for (d) 5x4. We now arrive at different answers wherein the answer for (c) is 18 and (d) is 20. In the case of (a) and (b) equations brackets were not essential since BODMAS conveys to us to do the multiplication before addition.

But with the addition of brackets which reinforces the BODMAS rules could be helpful in evading confusion. Comprehending BODMAS is likely to get us most of the way with regards in resolving the problem though it also assists in being aware of the commutative as well as the associative properties of mathematics. Calculated process is said to be commutative if it is not considered in which order the numbers are said to be written in and addition is commutative since a+b=b+a. However subtraction is not a commutative since a-b is not the same as b-a.

 Moreover it is also direct to display that multiplication is commutative while division is not. An operation is said to be associative when we have numerous successive incidences of this type of operation and it does not matter to which order we carry them out.

Moreover addition as well as multiplication seems to have this property and though subtraction together with division does not have the same. Once the understanding of the correct order of operation together with the associative as well as commutative properties has been arrived we tend to have the tool-box in solving any well-defined arithmetical equation.

Wednesday, June 21, 2017

Black Hole Computer Simulations Help to Identify Third Gravitational Wave

Gravitational Wave Signal

Significant contributions to gravitational wave astronomy continues with Rochester Institute of Technology researchers with the third detection of gravitational waves as well as a fresh black hole which is 49 time the size of the sun. The results from the detection of gravitational waves on January 4, was recently announced by the LIGO collaboration and the finding would be published in the journal Physical Review Letters.

 RIT scientists had supported the collaboration measure as well as interpreted black hole spins together with their alignment. These measurements could tell scientists on what occurred when massive stars tend to die and transform into black holes. The gravitational wave signal had been developed from the collision of black holes. The freshly located black hole which had been formed by the merger had a mass of around 49 times that of the sun.

This tends to fill in a breach between the masses of the two merged black holes detected earlier by LIGO, with that of the solar masses of 62 – the first detection and 21 – second detection. Richard O’Shaughnessy, associate professor in RIT’s School of Mathematical Sciences had commented that they can see the outlines of a population of black holes emerge.

Combination of Heavy Black Holes – Plenty of Net-Aligned Spin

The LIGO paper quotes O’Shaughnessy’s upcoming research that had been utilised in part to assist in interpreting the latest event. He had presented his work at the American Astronomical Society in Austin, Texas. He noted that the fresh observations rule excludes the possibility that combination of heavy black holes tend to have plenty of net-aligned spin and are in agreement with the breakthrough observation of 2015 of LIGO.

O’Shaughnessy stated that either since heavy black hole spins seems to be small or due to they being tilted, their net effect cancels out. Various teams have made diverse predictions for black hole spins and the most extreme forecasts are ruled out. With regards to the others, it is only a matter of time. Centre for Computational Relativity and Gravitation, a research at RIT is developing the techniques for comprehending the crucial astrophysical parameter spin according to Professor Carlos Lusto, in the School of Mathematical Science of RIT.

 Lousto had commented that at RIT, they are working on enhancing the spin measurements of the black holes by resolving to high precision the equations of Einstein and directly comparing those theoretical forecasts with those of the observed signals of LIGO.

Gravitational Ways Moves at Speed of Light

At the Centre for Computational Relativity and Gravitational of RIT, researchers have openly linked the wave signals to their computer simulations considering the equations of Albert Einstein. The latest interpretations have further tested the general theory of relativity and prediction of Einstein that gravitational ways tends to move always at the speed of light.

 No confirmation has been seen by LIGO that the waves had travelled at different speeds. According to Manuela Campanelli, director of the Centre for Computational Relativity and Gravitation and Frontier in Gravitational Astrophysics, which is an RIT signature research area, this third event is in a mass range intermediate to the earlier two events showing that the black hole mergers are common in the universe.

The members of the RIT of the LIGO Scientific Collaboration comprise of John Bero, Hans-Peter Bischof, Manuela Campanelli, James Healy, Brennan Ireland, Jacob Lange, Carolos Lusto, Rupal Mittal, Richard O’Shaughnessy, Monica Rizzo, Nicole Rosato, John Whelan, Andrew Williamson, Jared Wofford, Daniel Wysocki, and Yuanhao Zhang together with Yosef Zlochower.

The international collaboration tends to have around 1,000 members who seem to perform the research of LIGO along with the European-based Virgo Collaboration. The new discovery had taken place at the time of the prevailing observing run of LIGO that had started on November 30 2016 and would be continuing through the summer.

Interpretations of LIGO – Twin Detectors

The interpretations of LIGO had been carried out by twin detectors, one in Hanford, Wash while the other was in Livingston, La. It was operated by Caltech and Massachusetts Institute of Technology with subsidy from the National Science Foundation. The first undeviating surveillance of gravitational waves by LIGO was done in September 2015 while the second discovery was in December 2015.

The LIGO breakthrough paper obviously quotes 2005 landmark research done by Campanelli together with her team on binary black hole mergers and considering this milestone work, Lusto together with Healy statistically revealed the merger of a pair of black holes with replicated gravitational waveforms which seemed to match the first detection of LIGO.

Subsidized by the National Science Foundation, LIGO was operated by MIT and Caltech, conceived and the project was constructed. Monetary support for the Advanced LIGO project had been led by NSF with Germany – Max Planck Society, the U.K. – Science and Technology Facilities Council and Australia – Australian Research Council which made substantial commitments as well as contributions to the project.

Over 1,000 scientists from across the globe had participated in the work through the LIGO Scientific Collaboration that comprised of the GEO Collaboration. The partners of LIGO with the Virgo Collaboration which is a consortium comprising of 280 additional scientists all over Europe had been supported by the Centre National de la Recherche Scientifique, the Istituto Nazionale di Fisica Nucleare and Nikhef and Virgo’s host institution, the European Gravitational Observatory.

Wednesday, May 31, 2017

Mining the Moon Could Give Us Enough Rocket Fuel- Says Student Researcher

mining of moon

2017 Caltech Space Challenge

It’s been forty five years since man had last set foot on space and now the moon is said to be the focus of effort for not only exploring space but alsoto develop aenduring, independent space managing society.Scheduling an expedition to the nearest celestial neighbour of Earth is now no longer just an effort of NASA but the space agency of U.S has ideas for a moon-orbiting space station which would be serving as a performing ground for Mars mission in the early 2030s.

 A joint project – the United Launch Alliance between Lockheed Martin and Boeing has scheduled a lunar fuelling station for spacecraft with the potential of supporting 1,000 people living in space within 30 years. Billionaires Elon Musk, Jeff Bezos as well as Robert Bigelow have companies focussed on delivering people or goods to the moon.

 Many teams competing in partaking in the share on the cash prize of US$30 of Google are intending to launch travellers to the moon. Recently a few together with 27 other students from across the world had contributed in the 2017 Caltech Space Challenge suggesting designs on what a lunar launch and supply station for deep space mission could appear like and how it would function.

Moon – One-Sixth of Gravity of Earth

Presently all space missions depend on and are launched from Earth though its gravitational pull seems to be strong. In order to get into orbit, the rocket needs to be travelling 11 km a second – 25,000 miles per hour.

A rocket leaving Earth needs to carry the fuel essential to reach its destination and if needed to return back again. The fuel is said to be heavy and moving with it at such high speeds would take a lot of energy. If the refuelling is done in orbit, the launch energy could lift more travellers or cargo or scientific equipment in orbit.

The spacecraft could then refuel in space where the gravity of the Earth seems to be less powerful.The moon is said to have one-sixth of the gravity of Earth making it a pretty substitute base. Besides this, it also has ice wherein we are aware how to process into a hydrogen-oxygen propellant which can be utilised in several recent rockets.

The Lunar Reconnaissance Orbiter and Lunar Crater Observation and Sensing Satellite missions of NASA have now found considerable quantity of ice in long-lasting shadowed craters on the moon.

Prospector/Constructor/Miners

These would be tricky locations to mine since they tend to be colder and have no sunlight to power wandering vehicles. But big mirrors on the rims of the craters could be installed in order to illuminate solar panels in the permanently shaded regions.

Travellers set to launch in 2020 from Lunar X Prize competition from Google and Lunar Resource Prospector from NASA would also be contributing in locating good areas to mine ice. Based on where the best reserves of ice seem to be, it would be essential to build many small robotic moon bases. Each would mine ice, manufacture liquid propellant as well as transfer the same to passing spacecraft.

A plan of accomplishing these tasks with three various types of ramblers had been developed by the team. The plan also needed some small robotic shuttles in meeting up with nearby deep-space mission vehicles in lunar orbit. One of the rover known as Prospector would be exploring the moon and locate ice-bearing areas.

A second, the Constructor would be following along behind constructing a launch pad and packing down roadways to ease movements for the third kind of rover, the Miners. This would in fact amass the ice, delivering it to the nearest storage tanks and an electrolysis processing plant which tends to split water into hydrogen and oxygen.

Landing Pad – Lunar Resupply Shuttles

Moreover, the Constructor would also be erecting a mooring pad wherein small near moon vehicle spacecraft called Lunar Resupply Shuttles would be arriving for the collection of fuel for delivery as lately launched spacecraft pass by the moon.

The aircrafts would utilise the moon-made fuel and have advanced guidance together with navigation systems for travel between lunar bases and their object spacecraft. With the provision for adequate fuel being produced and the aircraft delivery system is tested and dependable, their intentions are for building a gas station in space.

The aircraft would be delivering ice straight to the orbiting fuel depot after which it would be processed into duel and where the rockets heading to Mars or any other area could dock to refill. The depot would be equipped with large solar arrays powering an electrolysis module for the purpose of melting the ice and later turning the water into fuel together with huge fuel tanks for storing what is prepared.

NASA has been operational on most of the technology essential for a depot such as this comprising of docking and fuel transfer. A working depot is expected to be ready in the early 2030s in time for the first human missions to Mars.

Earth-Moon Lagrangian Point – L1

The depot needs to be placed in a stable orbit probably near the Earth and the moon to be most useful as well as effective.The Earth-moon Lagrangian Point 1 – L1 is said to be a point in space around 85% of the way from Earth to the moon wherein the force of the gravity of the Earth would match the force of the gravity of the moon pulling in the other direction.

It seems to be an ideal pit stop for a spacecraft going on its way to Mars or the external planets. The team also located a fuel-efficient system of getting spacecraft from Earth orbit to the L1 depot which needed much less launch fuel and reducing more lift energy for cargo items. Initially, the spacecraft would be launching from Earth into Low Earth Orbit with empty propellant tank and then it could be towed with its cargo from Low Earth Orbit to the L1 depot utilising solar electric force tug, which is a spacecraft largely propelled by solar-powered electric thrusters and this would triple the payload delivery to Mars.

By assisting us in escaping the gravity of the Earth as well as its necessity on the resources, a lunar gas station can be the initial move to the big leap in making humankind a space civilization.

Saturday, January 28, 2017

Gravity Waves On Venus Sparks Interest As Researchers Weigh In

Venus
Venus might be the closest look-alike to Earth we can get in our Solar system. It is likely dubbed as Earth’s sister planet due its similar size, mass, proximity to the Sun and composition. But that’s not why it has caught the eyes of scientists from all over the world. Huge waves have been spotted over the Venus atmosphere and what’s more mysterious is that these patches are stationary even though the clouds in the Venus atmosphere moves 100 meters per second.

What could be causing these unnatural patches? 

Since its discovery scientists and researchers have come forward with theories and the most plausible among them relates to the phenomenon widely observed on Earth and named as “Gravity waves”. These waves stretching over 6200 miles were created in the atmosphere just above the mountains by gravitational pull from the mountains as they flew over them. This would be a first time that these waves are observed on a planet.

What are Gravity waves? 

Gravity wave is an atmospheric phenomenon commonly seen on Earth surface that is laid with mountains. Roughly speaking they are formed when air ripples over rough and bumpy surfaces. The waves then move upwards and grow larger and larger in amplitude until they break just below the top of the clouds. It is speculated that the tall mountains over the Venus surface serve as a key factor in creating these giant gravity waves. Though the mechanism of the wave formation between Earth and Venus are quite different, the underlying principle remains intact. This feature which denotes atmospheric flow over the mountains should not be confused with “gravitation wave” which are time ripples in early universe.

These baffling spots were taken by Japanese Aerospace Exploration Agency’s Akatsuki Spacecraft as it entered the Venus orbit in late 2015. Researchers from Rikko University in Tokyo studied these waves and published their research in the Natural Geoscience Journal this year. These stationary waves lasted for quite some time in the Venus Atmosphere and were seen between December 7 and 11. Researchers added that the most interesting and unique feature of this phenomenon was it being stationary and remaining at that exact same geographical spot despite the super rotation of the Venus atmosphere at speeds more than 100 meters.

Wednesday, December 28, 2016

Watch the Earth Change before Your Eyes

Earth

Landscapes/Features of Earth Undergone Dramatic Change


Several of the landscapes and features of the Earth have undergone a dramatic change since 1984. Google has made its prime update to Time-lapse with addition of four years of imagery, big amounts of new data together with a sharper view of the Earth from 1984 to 2016.

Latest images by Google’s Time-lapse application portrays how the features comprising of Alaska’s Columbia glacier and Dubai’s extensive cityscape tend to have drastically progressed in the last 32 years. Its Time-lapse visualisation of Earth, had first been released by Google in 2013, offering the most comprehensive image of our changing planet, made available to the public.

The communicating time-lapse experience permits people in exploring changes to the surface of the Earth like never before from observing the sprouting of Las Vegas strip to the retreat of Alaska’s Columbia glacier. Moreover, it enables user in exploring a variety of compelling locations much further than 1984. For instance, in London, one can make out the progress of the City Airport and the Olympic stadium in Stratford. On zooming in on the Aral Sea it portrays how it has been drying since the 1960s owing to Soviet irrigation programmes.

New Time-lapse Show Sharper View of Planet


If the date is moved to 2007, the volume of the Aral Sea seems to be reduced to about 10% of its original size. For the time being, over the past three decades, Alaska’s Columbia Glacier is observed to have retreated over 12 miles.Another city which has undergone drastic changes since 1984 is New York.

 In comparison to 1984 to 2016, it shows how much progress has been made around the Central Park area and Brooklyn. Programme Manager at Google Earth Engine, Chris Herwig, had commented that `in leveraging the same techniques were used in improving Google Maps and Google Earth back in June, the new Time-lapse showed a sharper view of our planet, with truer colours and less distracting artefacts’.

He further informed that using Google Earth Engine, they had combined over 5,000,000 satellite images, approximately 4 petabytes of data in creating 33 images of the complete planet, one for each year. He added that for the latest update, they had access to more images from the past due to the Landsat Global Archive Consolidation Program together with fresh images from two new satellites, namely Landsat 8 and Sentinel-2.

USGS/NASA - Landsat


The 33 new terapixel global images were then encoded into just over 25,000,000 overlapping multi-resolution video tiles, making interactively explorable by Carnegie Mellon CREATE Lab’s Time Machine library, which is a technology in creating and inspecting zoomable as well as pannable time-lapses over space and time.

In order to explore the feature, one could type in the name of a place in the search bar and move the timeline towards the bottom in opting for the year one would prefer to view. Images had been initially collected as part of constant joint mission between the United States Geological Survey –USGS and NASA known as Landsat.

 The Landsat mission’s satellites since the 1970s had been observing the Earth from space. The images have been sent back to Earth and archived on USGS tape drives which is an achievement that is much stress-free with the present digital technology than with analog tape in the 1970s. In order to make this historic archive of earth imagery available online, Google began working with USGS in 2009.

Wednesday, August 10, 2016

The Mystery of Space Roar

ARCADE

ARCADE – Scientific Instrument Package Sent in Space – Helium Balloon


Early in July 2006, ARCADE – Absolute Radiometer for Cosmology, Astrophysics and Diffuse Emission, a scientific instrument package had been sent in the air through a Helium Balloon. Columbia Scientific Balloon Facility of NASA in Palestine Texas had been the point of launch and had reached an altitude of 120,123 feet at the point one would call `Space. A research scientist at NASA’s Goddard Space Flight Centre, Dr Alan Kogurt who was also the head of the ARCADE team had been looking for unusual Radio Emission which are rather challenging to monitor on ground level due to the increased Radio noise found on the ground.

 The radio emissions stemming from space has been known since the discovery by Nikola Tesla and probably Karl Jansky. It is said that there is a fragment and uniform radio emission which is believed to have been the result of the Big Bang, Cosmic Background Radiation. Dr Kogurt had been hoping to find confirmation of the Cosmic Background as well as a few new radio emission points and what he found was one of those historic `Wow Moments’ in his scientific research. What he has learned is noted in his own words `The universe really threw us a curve’. Instead of the faint signal we hoped to find, here was this booming noise six times louder than anyone had predicted’
ARCADE

NASA Discovered `Space Roar’


NASA found something known as `Space Roar’ which is a sound that is six times louder than anything one could have ever expected. It is a signal that has been discovered by NASA’s ARCADE instrument that is presently without any explanation.

In space no one could hear you scream since there is no medium through which sound can move. Space roar is not actually a sound but it is radio waves. Space roar had first been discovered by ARCADE and has a very fancy name for some very fancy equipment which NASA had attached to a big balloon which was sent into space. ARCADE had intended to look for radio signals from distant galaxies.

Since radio is so commonly used and also utilised in creating auditory signals, it seems easy to overlook that it is just another form of light. It is much less energetic than the visible light where our eyes are not accustomed for it though it tends to behave in the same manner.

Intended to Pick Faint Radio Signals of Distant Stars


A star releasing radio waves is not much different from the sun releasing visible light. Actually to someone far away or far in the future, the sun possibly is emanating primarily radio waves.ARCADE, when sent out in space was intended to pick up the faint radio signals of distant stars. Instead it received strong blare of radio and the input has been described as `boom’ by those who have been researching on it.

After some research done, the idea had been ruled out that it had been just very loud early stars. They also ruled out that it was coming from the dust of our own galaxy and was just a blast of radio, - `space roar’ which seemed to be part of the background noise with no explained reason. Though space roar has vexed the interest of several, there is yet no explanation for the same.

Monday, July 18, 2016

Electromagnetic Aircraft Launch System

EMALS


The Electromagnetic Aircraft Launch System is said to be a system under development by the United States Navy for launching carrier-based aircraft from aircraft catapult utilising a linear motor drive rather than the conventional steam piston drive.

It utilises computer controlled, solid-state electrics in propelling an armature down a track. The main benefit of the system is that it enables a more graded acceleration encouraging reduced stress on the airframe of the aircraft. Other benefits comprise of lower system weight together with a probable lower cost as well as reduced maintenance needs. Owing to its flexible architecture, the electromagnetic aircraft launch system has the ability to launch a wide variety of aircraft weights and can also be utilised in various platforms with contradictory project structures.

The design is said to include the capability of launching aircraft which tend to be heavier or lighter than the conservative system could accommodate. Besides this, the system needs much less of fresh water thus reducing the requirements of energy-intensive desalination. The age of steam seems to have ended; at least as far as US aircraft carriers are concerned since at Newport News Virginia, the USS Gerald R Ford (CVN 78) had successfully test fired a revolutionary Electromagnetic Aircraft Launch System – EMALS.

Higher Launch Energy/More Reliable/Mechanically Modest


This tends to replace the steam catapults since the 1950s, which had been the standard carrier equipment. The test has made a precise splash since it involved an unmanned dead-weight sledge instead of an aircraft that landed around a hundred yards off the bow of the yet under construction vessel. The so called Ford, the first of her class will be the first US navy ship, carrying the electromagnetic launchers and though it would be utilised on all upcoming carriers it would not be retrofitted to existing vessels.

Being under development for more than 25 years and manufactured by General Atomics, EMALS is said to be the first new carrier project technology in 60 years indevelopmentof real-world application.The EMALS has been designed to substitute the steam-powered launch system which had been the standard on strike carrier for a long period.

As per the Navy, EMALS is said to have the potentials of being utilised by a wide selection of aircraft, is near-silent as well as enjoys smoother acceleration together with a much more consistent launch speed. Moreover it also tends to have higher launch energy, seems to be more reliable, mechanically modest and is easy with regards to maintenance.

Substantial Advantages over Present Launch Systems


EMALS has been tested in the first phase of ACT testing which had ended in 2011 and had included 134 operated launches of aircraft, comprising of the F/A-18E Super Hornet, T-45C Goshawk, C-2A Greyhound, and E-2D Advanced Hawkeye together with the F-35C Lightning II. The second phase had seen the launches of the EA-18G Growler and F/A-18C Hornet. Overall 452 operated launches had been piloted.The substantial advantages over present launch systems provided by EMALS comprise of:

  • Reduced operating and life-cycle cost 
  • Reduced thermal signature 
  • Increased launch working capability for operated, un-operated aircraft 
  • Reduced topside weight 
  • Reduced installed volume

Saturday, April 9, 2016

Mathematicians Find a Peculiar Pattern In Primes

Primes


Mathematicians – Discovered Pattern in Primes


Mathematicians have discovered that prime numbers that are divisible only by 1 and themselves tend to hate repeating themselves and prefer not to imitate the final digit of the preceding prime. Robert Lemke Oliver, Stanford University postdoctoral researcher who with Stanford number theorist Kannan Soundararajan had discovered this unusual prime predilection had commented that `it is really bizarre and that they are trying to understand what is at the heart of its.

Primes, generally speaking are considered to behave like random numbers and whenever some kind of order is discovered, it tends to give the mathematicians a pause. Number theorist Barry Mazur of Harvard University has stated that `any regularity one can show regarding primes is appealing since there could creep around some new structure. Exposing some kind of architecture where it was presumed that there are none could lead to inroads in the structure of the mathematics’.

When primes tend to get in the double digits, they should end either in a 1, 3, 7 or 9 and mathematicians are aware that there are around the same number of primes ending with each digit. Each seems to appear as the last number about 25% of the time.

Bias in Order Where Final Digits Appear


In arithmetic progressions, the prime number theorem proved this distribution around 100 years back and the yet unresolved Riemann hypothesis forecasts that the rates tend to rapidly reach 25%. This property is tested for millions of primes according to Soundararajan. Mathematicians, without any reason to think then, have presumed that the distribution of those final digits had been basically unplanned.

Considering a prime which ends in 1, the odds that the following ends in 1, 3, 7 or 9 must be approximately equal. Soundararajan has commented that if there is no interaction among primes, it is what one would expect, though something funny tends to happen’. Inspite of individual final digit seems to appear somewhat the same amount of time there is a bias in the order wherein these final digits seem to appear. Prime which tends to end in 7 for instance is quite less likely to be followed by a prime which also ends in 7 than a prime which ends in 9, 3 or 1.

Anti-Sameness Bias


Andrew Granville, a number theorist at the University of Montreal and University College London had stated that the discovery of the final digit bias had no conceivable practical use and the point is the wonder of the discovery. The irregular pattern had been previously observed by two separate teams of researchers though the Stanford duo seems to be the first to clear a mathematical explanation for the pattern that was posted online on March 11 at arXiv.org. Granville who calls the work rigorous, refined and delicate, had informed that when the numbers were crunched by the researchers, based on the hypotheses, they had predicted that it fitted the results strangely.

One would contemplate that this `anti-sameness’ bias tends to follow naturally from the order of numbers and 67 is followed by 71 and is followed by 73. However, this explanation does not suit the data according to Lemka Oliver who checked the computer calculations out to 400 billion primes. He says that the `bias is way too large and is not equal for the non-repeating final digits.

So between the first hundred million primes for instance, a prime which tends to end in 3 is followed by a prime which ends in 9 about 7.5 million times while it is followed by a prime which ends in 1 about a million times. The last 3 is followed by a final 3, a mere 4.4 million times.

Saturday, August 22, 2015

A Warp Drive

Warp_Drive

Warp Drive – Hypothetical FTL

Warp Drive is a hypothetical faster than light FTL, an impulsion system which helps one to travel several times faster than light on manipulating the fabric of time as well as space It is something which enabled the Starship Enterprise to courageously go where no man has ever gone before.

A spacecraft equipped with warp drive could travel at apparent speeds which can be greater than that of light by several orders of magnitude. When compared to other hypothetical FTL technologies like jump drive or hyper drive, warp drive does not seem toallow instant travel between two points but comprises of a measurable passage of time.

Spacecraft at warp velocity tend to interact with objects in normal space. A NASA research team, in 2012 had revealed that they are operating on a Star Trek style warp drive. They in fact have several ideas already as to how they would eventually be capable of making warp drives to function.

The most projecting possibility presently depends on a 1994 theory by Miguel Alcubierre wherein the idea is based on `expanding’ the fabric of space beyond the ship and retracting the space ahead that would make the ship move forward as if it were riding a huge conveyor belt.

Several Images of Interstellar Travel

Since sound barrier had been broken, many have turned their focus on how to break the light speed barrier. However, Warp Drive or any other term with regards to faster-than-light travel seems to stay at a level of assumption. Majority of scientific knowledge determines that it is impossible while considering Einstein’s Theory of Relativity and there are some reliable concepts in scientific literature though it is too early to know if they are practical.

Several writers of science fiction have given many images of interstellar travel; though travelling at the speed of light is presently only imaginary. Meanwhile, science has been making headway and while NASA is not trailing interstellar flight, scientists have continued to advance ion propulsion for missions to deep space and beyond it, utilising solar electric power. This method of propulsion seems to be the fastest and the most efficient as of date.

System Depends on Electromagnetic Drive/EMDrive

NASA is said to have been silently testing an innovative new method of space travel which would someday enable humans to travel at speeds much faster than light. Researchers are of the belief that the new drive would be carrying passengers together with their equipment to the moon in as little as four hours.

A trip to Alpha Centauri which would take tens of thousands of years would now be reached in just 100 years. The system depends on electromagnetic drive or EMDrive that converts electrical energy into thrust without the use of any rocket fuel.

Over the years of scientific theory, several strange theories which have become reality have come up. To know more on the theories of interstellar flight, one could visit the Tau Zero Foundation. A former NASA Glenn physicist, Marc Millis, had founded the organization to consider revolutionary advancements in propulsion. Warp drive which enables humans to go around other galaxies may now no longer be purely in the dominion of science fiction.

Saturday, December 13, 2014

Tesla Death Ray


The Death Ray/Death Beam – Theoretical Particle Beam 

Tesla Death Ray
The death ray or death beam, a theoretical particle beam or electromagnetic weapon during the 1920s till the 1930s, was claimed to have been independently invented by Edwin R. Scott, Graichen, Guglielmo Marcone, Nikola Tesla and Harry Grindell Matthews together with several others.

The National Inventors Council, in 1957 were issuing list of needed military inventions which included a death ray. Based on fiction and inspired by past speculation, research into energy based weapons, gave rise to the contribution of real life weapons in use by modern militaries which was at times called a kind of `death ray’, such as the United States Navy and its `Laser Weapon System’ –LaWS, which were deployed in mid-2014 and these armaments were technically known as - directed energy weapons.

Tesla inherited a deep hatred of war from his father and all through his life he thought of a technological way to put an end to warfare. He was of the opinion that war could be converted into a `mere spectacle of machines’.

He informed reporters at a press conference in 1931 that he was on the way of discovering a new source of energy and when asked to explain the nature of the power, he informed that `the idea first came up as a tremendous shock and at that point of time he could only state that it would come from an entirely new and unsuspected source’.

Death Beam/Teleforce – Invented in 1930

Nikola Tesla is said to have invented in the 1930s, a `death beam’, which was called teleforce. He explained that `this invention does not contemplate the use of the so-called `death rays’ and the rays are not applicable since they cannot be produced in required quantities which tends to diminish quickly in intensity with distance.

All energy of New York City transformed into rays projecting twenty miles could not kill a human being since according to the well-known law of physics; it could disperse to an extent so as to be ineffectual. The apparatus projects particles which could be comparatively large or of microscopic dimensions with provision to convey to a small area at great distance trillions of times additional energy was possible with rays of any type.

Thus thousands of horsepower can be transmitted by stream which could be thinner than hair so that nothing can resist’.He proposed that a nation could destroy any object approaching within 200 miles and could provide a wall of power to make any country whether big or small, impregnable against armies, airplanes or any other means of attack.

Particle Accelerator 

The mechanism of Tesla’s death ray is not comprehended well and was apparently a kind of particle accelerator. According to Tesla it was an outgrowth of his magnifying transformer with its focus on energy output in a thin beam was so concentrated, that it could not scatter even over large distances.

Tesla promoted this device purely as a defensive weapon with intentions to knock down incoming attacks, making it the greatest grandfather of the Strategic Defence Initiative. Though the concept of a death ray was never put into action, it somehow fuelled science fiction stories which lead to the science fiction concept of the hand held ray gun that are used by fictional heroes like Flash Gordon. Other similar weapons are also found in George Lucas’ science fiction saga like `Star Wars’.

Wednesday, December 3, 2014

Bernoulli Space


Daniel Bernoulli
The Bernoulli Space – A Mathematical Concept 

The Bernoulli space, is a mathematical concept for the transition from past to future with due consideration of uncertainty of the future developments. It is at the main focus of Bernoulli stochastic which represents the basis for reliable as well the exact predictions together with measurements.

The Bernoulli space does not seem to presume an ideal world, for instance, the example of physics on the basis of belief in truth and causality where in contrast, the Bernoulli space acknowledges human ignorance and cosmological pattern which could generate uncertainty and as a mathematical model of change, could be regarded as a means of obtaining accurate as well as reliable predictions.

The term `uncertainty’, before the introduction of the model, should be explained since it could have several inconsistent meanings in the daily speech which in everyday speech, uncertainty could be referred to determinate, though unknown facts or to the indeterminate future which is not known since it does not exist so far. The difference is obvious between the facts and future events, a fact which is specified and if considered has a fixed value.The future event on the other hand is indeterminate and hence may or may not take place.

Ignorance Related to True Value – Unknown 

Fact may be unknown though it is fixed while a future even may not be known or unknown since it is subject to randomness which could or not occur. From the point of unique interpretation, uncertainty is explained as the inability to predict the future development accurately and this inability is because of the ignorance related to the past as well as the randomness regarding the future.

The two elements of ignorance and randomness generate uncertainty and while describing uncertainty in a quantitative manner, both the sources need to be taken into consideration. Ignorance relates to the true value which is unknown it is only rarely that the true values of considered attributes are known though in general they are unknown.

Values are what is known but are not the true value and with the knowledge on `what is not’, it is possible to state a set of values which are true though may be unknown. This reflects the knowledge on `what is no’, or the ignorance of `what is’ and the larger the set, the larger would be the ignorance.

Randomness – Future Episodes

Randomness on the other hand refers to future episodes and reflects a natural tendency to take place and could be small or large based on the given situation. Over 300 years back, Jacob Bernoulli, the Swiss theologian as well as a mathematician was successful in quantifying randomness of a future event.

He related the occurrence of natural tendency of a future event with the help of degree of certainty of its occurrence, calling this degree probability and if the occurrence is impossible in a given event, there is no propensity with the degree of certainty, which is the probability that would be 0.

While on the other hand if the occurrence is certain in a given event, the propensity would be at the maximum with the degree of certainty being the value of one.

Saturday, November 29, 2014

Minimax Decision Theory


Minimax
Minimax – Decision Rule 

Minimax is referred to a decision rule which is used in decision theory, statistics, game theory and philosophy, in reducing the possible loss for a worst case scenario. It is a principle for decision making when presented with two various and conflicting strategies with the use of logic and determine using the strategy which will minimize the maximum loss that may occur.

Formulated earlier for two players zero sum game theory covers both cases wherein players make alternate moves. Those that make simultaneous moves have been extended to more complex games with general decision in the presence of uncertainty. In the case of theory of simultaneous games, a minimax strategy is considered to be a mixed strategy that is part of the solution to a zero sum and in zero sum games; the minimax solution is the similar to the Nash equilibrium.

There is a minimax algorithm for game solutions in combinatorial game theory. With games like tic-tac-toe, simple version of the minimax algorithm is used where individual player can win, lose or end up in a draw. Minimax algorithm is considered to be a recursive algorithm in choosing the next move in a game which usually has two players participating in a game.

Combinatorial Game Theory

It is associated with a value for each position or state of the game and the value is computed by a position evaluation function, indicating how good it would be for a player to reach a particular position. The player on his part tends to make the maximum moves thereby minimizing the value of the position from the opponent’s following moves.

 An allocation method comprises of assigning a certain win for one play as +1 and for the other player as -1 which leads to combinatorial game theory developed by John Horton Conway. Using a rule is an alternative if the result of a move is an immediate win for one player, it is considered positive infinity and if it is an immediate win for the other player, then it is a negative infinity. Value of the first player of any other move is the minimum values resulting from each of the second players possible moves. Due to this the first player is called the maximizing player while the second player is called the minimizing player; hence it is given the name minimax algorithm.

Heuristic Evaluation Function 

This algorithm assigns a value of positive as well as negative infinity to any position since the value of every position will be the value of some final winning or losing position. Generally this is often possible at the end of a complicated game like chess because it is not feasible to know about the result before the completion of the game which could lead to one of the player winning.

We could extend this if we supply a heuristic evaluation function which gives values to non final game status without taking into account all possible following complete sequences and then limit the minimax algorithm to note only a certain number of moves coming up. The number is known the `look-ahead’, which is measured in `plies’. For instance, the chess computer `Deep Blue’ looked forward to at least 12 plies and then applied a heuristic evaluation function.

Tuesday, November 25, 2014

Ball Lightning


Ball Lightning
Ball Lightning – Rare Weather Phenomenon

A rare weather phenomenon known as ball lightning has been observed for the first time in nature by Chinese scientists. Ball lightning is an unexplained electrical phenomenon which occurs during thunderstorm, is unpredictable and is the reason why the researchers do not know much regarding it. It tends to last for more than a second that is considered long lived for lightning but hard to capture and study.

Some reports state that the ball would explode sometimes with fatal consequences and would leave behind the odour of sulphur. Several scientific hypotheses have been proposed down the centuries about the ball lightning. A report published in The Journal of Physical Chemistry, last year, has made researchers at the U.S. Air Force Academy in Colorado, to figure out how to reproduce ball lightning in the lab. Electrodes were used partially submerged in electrolyte solution in order to create high power electric sparks which resulted in bright white plasmoid balls.

According to layman’s term, ball lightning seems to be a big flash of light which looks circular and appears during a storm in the sky. Sometimes it tends to have a blue glow and emanates from objects like lightning rods or ship masts.

Ball Lightning 1
Few Scientific Data – Infrequency/Unpredictability

Till 1960, several scientists debated that ball lightning was not a real phenomenon inspite of numerous sighting throughout the world and laboratory experiments could produce effects which seemed to be visually similar to the reports of ball lightning.

 Many are speculating whether these were related to the natural phenomenon. The scientific data with regards to ball lightning are few due to its infrequency as well as unpredictability. Its existence is presumed on basis of reported public sightings which has produced some inconsistent findings. Based on inconsistencies and the lack of reliable data, the true nature of ball lightning is yet unknown.

The first optical spectrum which appears to be a ball lightning event was published and included a video at high frame rate in January 2014.According to historical account it is considered that the ball lightning to be the source of the legends which describe luminous balls like the Mapuche Anchimayen of mythology and some have claimed that it is harmless and small while others state that it is dangerous and large.

Ball Lightning 1
Mike Lindsay/US Air Force Academy
Various Theories

A study done in 1960 shows that 5% of the population of the Earth witnessed ball lightning while another study analysed reports of around 10,000 cases. One such description was reported on 21st October 1638, during the Great Thunderstorm near a church in Widecombe-in-the-Moor, Devon, England, where four people died with around 60 injured during a severe storm when an 8 foot ball of fire struck, entered the church and destroyed it.

The huge stones from the walls of the church were hurled to the ground and through the large wooden beams and the ball of fire smashed the pews as well as several windows filling the church with the odour of sulphur and dark thick smoke. It was reported that the ball of fire had been divided into two parts with one exiting from the window by smashing it open while the other disappeared in some area in the church.

The conclusion at the time was that the ball of fire was the `devil’ or the `flames of hell’ and the fire had sulphur smell. Others blamed it on two people who had been playing cards in the pew during the service which aroused God’s wrath.

Thursday, June 12, 2014

The Monty Hall Problem – A Brain Teaser

The Monty Hall Problem
The Monty Hall Problem which is a brain teaser got its name from the TV game show known as `Let Make a Deal’, which was hosted by Monty Hall and has fascinated mathematician with the possibilities presented by the `Three Doors’.

This has led to the mathematical urban legend surrounding the `Monty Hall Problem’. The problem was first posted in a letter to the American Statistician to Steve Selvin in 1975 and it became a popular quest from a reader letter quoted in Marilyn vos Savant’s, `Ask Marilyn’, column in Parade magazine in the year 1990.

The scenario is such that one is given the choice to choose one closed door out of the three doors placed before them with one having a prize of hidden car behind it while the other two have goats behind them.The contestant is not aware of where the car is, but Monty Hall knows where the prize lies. The contestant selects a door and Monty opens one of the remaining doors, the one he knows does not have the car behind it.

 If the contestant has already chosen the correct door, then Monty is likely to open either of the two remaining door revealing that it does not contain any prize and goes on to ask the player if he would like to switch the selection to another unopened door or stay with the original selection. The player here is at a crossroad in considering his choice on the selection of the door, wondering on the probability of winning the car if they happen to stick to their original choice and what would be the chances of switching selection.

The Monty Hall Problem Difficult to Grasp

The Monty Hall Problem 1
The Monty Hall problem is difficult to grasp and unless the player thinks carefully about the deal, the role of the host goes unappreciated. The Monty Hall problem has drawn much academic interest from the surprising result with its simple formulation.

Variations has also been made by changing the implied assumptions which has created drastic different consequences where for one variation, if Monty offer the contestant a chance to switch while he had initially chosen the door with the prize of a car behind it, then the contestant should not think of switching on options. For another variation, if another door is randomly opened and happens to reveal a goat, then it does not make any difference to the contestant.

The problem is a paradox like the veridical types since the correct result is counter intuitive and seems absurd but true. This problem is closely related to the earlier Three prisoner’s problem as well as the older problem known as Bertrand’s box paradox.

Switching can turn Loss into Win/Win into Loss

According to Jason Rosenhouse, James Madison University mathematics professor, who has written an entire book on the subject – The Monty Hall Problem – The Remarkable Story of Math’s Most Contentious Brainteaser, states that the contestant can double their chance of winning on switching doors when the three conditions are fulfilled.

In the first place, Monty never opens the door which the contestant selects, secondly he always opens a door concealing a goat and thirdly when the first two rules leave Monty with a choice of doors to open, he makes his choice at random. Switching can turn a loss into a win and a win into a loss according to Rosenhouse.