Keyword: stringtheory
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Science fiction writers may have to rethink how their starship crews survive travel near or beyond the speed of light. Even the occasional hydrogen atom floating in the interstellar void would become a lethal radiation beam that would kill human crews in mere seconds and destroy a spacecraft's electronics, New Scientist reports. Just a few stray wisps of hydrogen gas -- fewer than two hydrogen atoms per cubic centimeter on average -- would translate into 7 teraelectron volts for a starship crew traveling at 99.999998 percent of the speed of light. That's as much fun for humans as standing in...
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WASHINGTON (Reuters) – Scientists have created the hottest temperature ever in the lab -- 4 trillion degrees Celsius -- hot enough to break matter down into the kind of soup that existed microseconds after the birth of the universe. They used a giant atom smasher at the U.S. Department of Energy's Brookhaven National Laboratory in New York to knock gold ions together to make the ultra-hot explosions -- which lasted only for milliseconds. But that is enough to give physicists fodder for years of study that they hope will help them understand why and how the universe formed. "That temperature...
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Atom smashers at a U.S. national lab have produced temperatures not seen since the Big Bang — 7.2 trillion degrees, or 250,000 times hotter than the sun's interior — in work re-creating the universe's first microseconds. The results come from the 2.4-mile-wide Relativistic Heavy Ion Collider at the Department of Energy's Brookhaven (N.Y.) National Laboratory. Since 2000, scientists there have hurtled gold atoms together at nearly the speed of light. These smash-ups heat bubbles smaller than the center of an atom to about 40 times hotter than the center of an imploding supernova. Scientists say the results have given them...
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Protons, neutrons melt to produce 'quark-gluon plasma' at RHICUPTON, NY — Recent analyses from the [http://www.bnl.gov/rhic/] Relativistic Heavy Ion Collider (RHIC), a 2.4-mile-circumference "atom smasher" at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, establish that collisions of gold ions traveling at nearly the speed of light have created matter at a temperature of about 4 trillion degrees Celsius — the hottest temperature ever reached in a laboratory, about 250,000 times hotter than the center of the Sun. This temperature, based upon measurements by the PHENIX collaboration at RHIC, is higher than the temperature needed to melt protons and...
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University of Calgary researchers use quantum entanglement to stack light particlesWhile many of us enjoyed constructing little houses out of toy bricks when we were kids, this task is much more difficult if bricks are elementary particles. It is even harder if these are particles of light – photons, which can only exist while flying at an incredible speed and vanish if they touch anything. A team at the University of Calgary has accomplished exactly that: by manipulating a mysterious quantum property of light known as entanglement, they are able to mount up to two photons on top of one...
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According to the Washington Post, David Axelrod, Barack Obama’s senior advisor, said that the president worked with “[Harvard professor] Laurence Tribe on a paper on the legal implications of Einstein’s theory of relativity.” I’ve read that paper, “The Curvature of Constitutional Space.” It’s complete nonsense.
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Scientists Claim To Tap The Free Energy Of Space by Richard Walters ("For the People" magazine) Physicist Bruce DePalma has a 100 kilowatt generator, which he invented, sitting in his garage. It could power his whole house, but if he turns it on, the government may confiscate it. Harvard educated DePalma, who taught physics at the Massachusetts Institute of Technology for 15 years, claims that his electrical generator can provide cheap, inexhaustible, self sustaining and non polluting source of energy, using principles that flout conventional physics and are still not fully understood. His N machine, as it is called, is...
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By Paul Recer AP Science Writer Wednesday, April 24, 2002; 4:21 PM WASHINGTON –– The universe is about 13 billion years old, slightly younger than previously believed, according to a study that measured the cooling of the embers in ancient dying stars.Experts said the finding gives "very comparable results" to an earlier study that used a different method to conclude that the universe burst into existence with the theoretical "Big Bang" between 13 and 14 billion years ago.Harvey B. Richer, an astronomer at the University of British Columbia, said the Hubble Space Telescope gathered images of the faintest dying...
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Initial results from high-energy proton collisions at the Large Hadron Collider offer first glimpse of physics at new energy frontier.In December, the Large Hadron Collider, the world’s largest particle accelerator, shattered the world record for highest energy particle collisions. This week, team led by researchers from MIT, CERN and the KFKI Research Institute for Particle and Nuclear Physics in Budapest, Hungary, completed work on the first scientific paper analyzing the results of those collisions. Its findings show that the collisions produced an unexpectedly high number of particles called mesons — a factor that will have to be taken into account...
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A major hurdle in the ambitious quest to design and construct a radically new kind of quantum computer has been finding a way to manipulate the single electrons that very likely will constitute the new machines' processing components or "qubits." Princeton University's Jason Petta has discovered how to do just that -- demonstrating a method that alters the properties of a lone electron without disturbing the trillions of electrons in its immediate surroundings. The feat is essential to the development of future varieties of superfast computers with near-limitless capacities for data. Petta, an assistant professor of physics, has fashioned a...
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Cygnus bubble detail_4m Mayall NOAO (1) Is the solar-system sized bubble in the Consellation Cygnus a planetary nebulae or could it be an "AC" or astroengineering construction, also known as a Dyson sphere, named after Freeman Dyson of the Princeton Institute for Advanced Study who proposed the theory? Dyson's thought experiment suggested that in our search for advanced extraterrrestrial civilizations that Instead of radio signals we should look for spheres, which are artificial mega structures that enclose the orbit of a star, fabricated from the material of that solar system. The key is to distinguish a Dyson sphere from...
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As every schoolchild knows, water freezes at 0oC. Or perhaps not. It has been known for centuries that pure water, in the absence of any nucleating surface, can remain in a supercooled liquid state down to temperatures as low as -40oC. Now, researchers in Israel have discovered that supercooled water itself will freeze at different temperatures depending on whether it is in contact with a positively or negatively charged surface. Ice crystals © Thinkstock Images For more than 150 years it has been known that electrical fields can affect the freezing point of supercooled water. However, it has been difficult to study...
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Art Bell is joined by physicist David Anderson, who'll discuss the history of time travel, and the status of time technology from research labs around the world, as well as the moral and ethical implications of this technology. Anderson is the President and CEO of Anderson Multinational LLC, the parent corporation of the Anderson Institute and several other companies, headquartered in Rochester, New York. He holds multiple patents relating to time technology and also for time reactor designs. His published works include more than thirty articles and video lectures on spacetime physics, time control technologies and methods and the philosophy...
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H. G. Wells lives today in the person of David Lewis Anderson, PhD. Over a hundred years ago, the proto-science fiction work, "The Time Machine" explored heady subjects of Time travel, post Armageddon societies, and evolutionary genetics when applied along class lines. A more fanciful yet forward thinking and eloquent novel could not be imagined at the time, turn of the Century late Victorian England. Yet science fictions have become reality so often, that to even question the premise is now laughable....
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Enlarge ImageBruiser. Young and massive star W33A is following the same accretion process as our sun. Credit: Lynette Cook/Gemini Observatory; Subaru Telescope/NAOJ (inset) It's a puzzle that has bedeviled astronomers and theorists for years: Do massive stars form in the same way as our sun or by some other process? Now a team of astronomers has gone a long way toward providing the answer by catching a massive star in the act of condensing. Their verdict is that this massive star, at least, seems to follow the same mechanism as smaller stars. Based on decades of observations, astronomers know...
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Researchers at the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology and the University of Maryland at College Park, can speed up photons (particles of light) to seemingly faster-than-light speeds through a stack of materials by adding a single, strategically placed layer. This experimental demonstration confirms intriguing quantum-physics predictions that light's transit time through complex multilayered materials need not depend on thickness, as it does for simple materials such as glass, but rather on the order in which the layers are stacked. This is the first published study* of this dependence with single photons....
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U.S. Department of Energy scientists say they've created a computer algorithm that allows a substantially enhanced view of nuclear fission. The Argonne National Laboratory scientists said the algorithm, known as the neutron transport code, enables researchers for the first time to obtain a highly detailed description of a nuclear reactor core. "The code could prove crucial in the development of nuclear reactors that are safe, affordable and environmentally friendly," laboratory officials said in a statement. To model the complex geometry of a reactor core currently requires billions of spatial elements, hundreds of angles and thousands of energy groups -- all...
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"Stop telling God what to do!" When Niels Bohr said these words to Albert Einstein - if indeed he ever did - it was probably in exasperation with Einstein's frequent repetition of the phrase "He does not play dice with the universe". The latter is perhaps the most famous of Einstein's many references to religion, although "The Lord God is subtle, but malicious he is not" comes a close second. There are many others too (see box below). Scientific materialists, who regard all forms of religious belief as superstition, are often puzzled and even embarrassed by Einstein's frequent remarks about...
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CAMBRIDGE, Mass. -- A new experiment that reproduces the magnetic fields of the Earth and other planets has yielded its first significant results. The findings confirm that its unique approach has some potential to be developed as a new way of creating a power-producing plant based on nuclear fusion — the process that generates the sun's prodigious output of energy. Fusion has been a cherished goal of physicists and energy researchers for more than 50 years. That's because it offers the possibility of nearly endless supplies of energy with no carbon emissions and far less radioactive waste than that produced...
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LONDON – It always falls down. That's how the apple helped Isaac Newton. An 18th-century account of how Newton developed the theory of gravity was posted to the Web Monday, making the fragile paper manuscript widely available to the public for the first time. Newton's encounter with the apple ranks among science's most celebrated anecdotes, and it can now be read in the faded cursive script in which it was recorded by William Stukeley, Newton's contemporary. [...]
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