Keyword: stringtheory
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FULL TITLE: QUANTUM TIME Scientists have built world’s first ‘time machine’ in experiment which defies the laws of physics ============================================================ Lead researcher Dr Gordey Lesovik said by putting scattered electrons back into their original shape they had effectively created a state which went against the 'direction of time' ============================================================ SCIENTISTS have built the world’s first time machine — sort of. Working with electrons in the bizarre realm of quantum mechanics, they first created the equivalent of a break for a game of pool. The “balls” scattered and, according to the laws of physics, should have appeared to split in a...
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There’s a crisis brewing in the cosmos. Measurements over the past few years of the distances and velocities of faraway galaxies don’t agree with the increasingly controversial “standard model” of the cosmos that has prevailed for the past two decades. Astronomers think that a 9 percent discrepancy in the value of a long-sought number called the Hubble Constant, which describes how fast the universe is expanding, might be revealing something new and astounding about the universe. The cosmos has been expanding for 13.8 billion years and its present rate of expansion, known as the Hubble constant, gives the time elapsed...
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Scientists have finally been able to accurately calculate the weight of the Milky Way, overcoming the difficult hurdle of measuring dark matter, the European Space Agency (ESA) announced Thursday. After years of struggling to estimate the size of our galaxy, astronomers with NASA and the ESA used data from the Hubble Space Telescope and the ESA’s Gaia mission to determine the Milky Way weighs about 1.5 trillion solar masses within a radius of 129,000 light years from the center. Because dark matter makes up about 90 percent of the galaxy, estimates of the Milky Way’s weight have differed widely in...
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February 22, 2019 | Salvatore Cezar Pais is a US Navy researcher. Salvatore has three amazing patents that would be incredible breakthroughs in physics if they are true. The least extreme is a patent for Piezoelectricity-Induced Room Temperature Superconductor. The other two patents are gravity wave generator and inertial mass reduction.If these could be realized as technologies then we are talking Star Trek level spaceships. The gravitational wave generator could be used for propellentless propulsion to near the speed of light. Being able to reduce inertia would also mean capabilities which currently seem beyond known physics.The more likely situation...
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Located in the constellation of Hercules, about 230 million light-years away, NGC 6052 is a pair of colliding galaxies. They were first discovered in 1784 by William Herschel and were originally classified as a single irregular galaxy because of their odd shape. However, we now know that NGC 6052 actually consists of two galaxies that are in the process of colliding. This particular image of NGC 6052 was taken using the Wide Field Camera 3 on the NASA/ESA Hubble Space Telescope. A long time ago gravity drew the two galaxies together into the chaotic state we now observe. Stars from...
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Dozens of manuscripts belonging to Albert Einstein, many of them unseen in public before, have been unveiled by the Hebrew University of Jerusalem. More than 110 new documents are now on display at the university, marking the 140th anniversary of Einstein's birth. It was donated by the Crown-Goodman Family Foundation and purchased from a private collector in North Carolina. The manuscripts contain an appendix to Einstein's article on Unified Theory ... The collection includes scientific work by the Nobel Prize winner that has never been published or researched.
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nitiated by physicists at the University of California, Irvine, the five-year FASER project is funded by grants of $1 million each from the Heising-Simons Foundation and the Simons Foundation – with additional support from CERN, the European Organization for Nuclear Research. ASER's focus is to find light, extremely weakly interacting particles that have so far eluded scientists, even in the high-energy experiments conducted at the CERN-operated LHC, the largest particle accelerator in the world. Feng, a theoretical physicist, will be joined by CERN collaborators as well as other scientists from research institutions in Europe, China, Japan and the United States....
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Qubits, the units used to encode information in quantum computing, are not all created equal. Some researchers believe that topological qubits, which are tougher and less susceptible to environmental noise than other kinds, may be the best medium for pushing quantum computing forward. Quantum physics deals with how fundamental particles interact and sometimes come together to form new particles called quasiparticles. Quasiparticles appear in fancy theoretical models, but observing and measuring them experimentally has been a challenge. With the creation of a new device that allows researchers to probe interference of quasiparticles, we may be one giant leap closer. The...
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Co-founder of string field theory and physicist Michio Kaku made waves last year — or at least seemed to — when it was reported that he’d proven the existence of God. The Geophilosophical Association of Anthropological and Cultural Studies quoted Kaku as saying, "I have concluded that we are in a world made by rules created by an intelligence. To me, it is clear that we exist in a plan which is governed by rules that were created, shaped by a universal intelligence and not by chance." Reacting to that public comment, Kaku said: "That’s one of the drawbacks...
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An emerging consensus suggests the crash can explain distant gamma-ray bursts GREAT ESCAPE A bright jet of fast-moving particles fled the scene after two neutron stars collided, spewing material and potentially forming a black hole (shown in this artist’s illustration). When a pair of ultradense cores of dead stars smashed into one another, the collision shot a bright jet of charged subatomic particles through space. Astronomers thought no such jet had made it out of the wreckage of the neutron star crash, first detected in August 2017. But new observations of the crash site using a network of radio telescopes...
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The known Universe just got a lot bigger. A new map of the night sky published Tuesday charts hundreds of thousands of previously unknown galaxies discovered using a telescope that can detect light sources optical instruments cannot see. The international team behind the unprecedented space survey said their discovery literally shed new light on some of the Universe's deepest secrets, including the physics of black holes and how clusters of galaxies evolve. "This is a new window on the universe," Cyril Tasse, an astronomer at the Paris Observatory who was involved in the project, told AFP. "When we saw the...
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Scientists think they've identified a previously unknown form of neural communication that self-propagates across brain tissue, and can leap wirelessly from neurons in one section of brain tissue to another – even if they've been surgically severed. The discovery offers some radical new insights about the way neurons might be talking to one another, via a mysterious process unrelated to conventionally understood mechanisms, such as synaptic transmission, axonal transport, and gap junction connections. "We don't know yet the 'So what?' part of this discovery entirely," says neural and biomedical engineer Dominique Durand from Case Western Reserve University. "But we do...
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Measurements of gravitational waves from approximately 50 binary neutron stars over the next decade will definitively resolve an intense debate about how quickly our universe is expanding, according to findings from an international team that includes University College London (UCL) and Flatiron Institute cosmologists. When neutron stars collide, they emit light and gravitational waves, as seen in this artist's illustration. By comparing the timing of the two emissions from many different neutron star mergers, researchers can measure how fast the universe is expanding. Credit: R. Hurt/Caltech-JPL The cosmos has been expanding for 13.8 billion years. Its present rate of expansion,...
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An invisible force is having an effect on our Universe. We can't see it, and we can't detect it - but we can observe how it interacts gravitationally with the things we can see and detect, such as light. Now an international team of astronomers has used one of the world's most powerful telescopes to analyse that effect across 10 million galaxies in the context of Einstein's general relativity. The result? The most comprehensive map of dark matter across the history of the Universe to date. ... "If further data shows we're definitely right, then it suggests something is missing...
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Electrons flowing across the boundary between two materials are the foundation of many key technologies, from flash memories to batteries and solar cells. Now researchers have directly observed and clocked these tiny cross-border movements for the first time, watching as electrons raced seven-tenths of a nanometer – about the width of seven hydrogen atoms – in 100 millionths of a billionth of a second. Led by scientists at the Department of Energy's SLAC National Accelerator Laboratory and Stanford University, the team made these observations by measuring tiny bursts of electromagnetic waves given off by the traveling electrons – a phenomenon...
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Quantum physics sets the laws that dominate the universe at a small scale. The ability to harness quantum phenomena could lead to machines like quantum computers, which are predicted to perform certain calculations much faster than conventional computers. One major problem with building quantum processors is that the tracking and controlling quantum systems in real time is a difficult task because quantum systems are overwhelmingly fragile: Manipulating these systems carelessly introduces significant errors in the final result. New work by a team at Aalto could lead to precise quantum computers. The researchers report controlling quantum phenomena in a custom-designed electrical...
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Something isn't quite right in the universe. At least based on everything physicists know so far. Stars, galaxies, black holes and all the other celestial objects are hurtling away from each other ever faster over time. Past measurements in our local neighborhood of the universe find that the universe is exploding outward faster than it was in the beginning. That shouldn't be the case, based on scientists' best descriptor of the universe. If their measurements of a value known as the Hubble Constant are correct, it means that the current model is missing crucial new physics, such as unaccounted-for fundamental...
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Our home galaxy, the Milky Way, makes for a pretty space picture, and it looks normal at a distance. But a new 3D map reveals a surprise: The Milky Way is being warped and twisted by its stars. The Milky Way is a spiral galaxy, in which stars and gas clouds exist mainly in its two spiral "arms." Our massive neighbor, the Andromeda galaxy, is also a spiral. Spiral galaxies usually appear very flat and easy to see through a telescope, said the researchers behind the new map, published Monday in the journal Nature Astronomy. Using 1,339 large, pulsating stars...
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The light released from around the first massive black holes in the universe is so intense that it is able to reach telescopes across the entire expanse of the universe. Incredibly, the light from the most distant black holes (or quasars) has been traveling to us for more than 13 billion light years. However, we do not know how these monster black holes formed. New research led by researchers from Georgia Institute of Technology, Dublin City University, Michigan State University, the University of California at San Diego, the San Diego Supercomputer Center and IBM provides a new and extremely promising...
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The question of how quickly the universe is expanding has been bugging astronomers for almost a century. Different studies keep coming up with different answers—which has some researchers wondering if they've overlooked a key mechanism in the machinery that drives the cosmos. Now, by pioneering a new way to measure how quickly the cosmos is expanding, a team led by UCLA astronomers has taken a step toward resolving the debate. The group's research is published today in Monthly Notices of the Royal Astronomical Society.At the heart of the dispute is the Hubble constant, a number that relates distances to the...
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