The final nail in the coffin may have been dealt to the idea that neutrino particles can travel faster than light. [More]
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Feed SubscriptionItalian physicist behind ‘faster-than-light’ test resigns
An Italian physicist at the head of a team that made a cautious but hugely controversial claim that neutrinos may travel faster than the speed of light resigned on Friday following calls for his dismissal.
Read More »The Joys of Quantum Entanglement
Quantum entanglement is such a mainstay of modern physics that it is worth reflecting on how long it took to emerge. What began as a perceptive but vague insight by Albert Einstein languished for decades before becoming a branch of experimental physics and, increasingly, modern technology. Einstein s two most memorable phrases perfectly capture the weirdness of quantum mechanics
Read More »Mass is energy
Some say that the reason you can't travel faster than light is that your mass will increase as your speed approaches light speed so, regardless of how much energy your star drive can generate, you reach a point where no amount of energy can further accelerate your spacecraft because its mass is approaching infinite.
Read More »Neutrino Experiment Replicates Faster-Than-Light Finding
By Eugenie Samuel Reich of Nature magazine Physicists have replicated the finding that the subatomic particles called neutrinos seem to travel faster than light. [More]
Read More »Finding Puts Brakes on Faster-Than-Light Neutrinos
By Eugenie Samuel Reich of Nature magazine The claim that neutrinos can travel faster than light has been given a knock by an independent experiment. On 17 October, the Imaging Cosmic and Rare Underground Signals (ICARUS) collaboration submitted a paper to the preprint server arXiv.org, in which it offered a rebuttal of claims to have clocked subatomic particles called neutrinos traveling faster than the speed of light. [More]
Read More »HK physicists prove single photons do not exceed the speed of light
(PhysOrg.com) -- Hong Kong physicists say they have proved that a single photon obeys Einstein's theory that nothing can travel faster than the speed of light -- demonstrating that outside science fiction, time travel is impossible.
Read More »Study finds single photons cannot exceed the speed of light
(PhysOrg.com) -- The rule that nothing can travel faster than the speed of light, c, is one of the most fundamental laws of nature. But since this speed limit has only been experimentally demonstrated for information carried by large groups of photons, physicists have recently speculated as to whether single photons and the information carried by them may be able to exceed the speed of light. In a new study, physicists have performed the difficult task of producing single photons with controllable waveforms, and have shown that single photons also obey the speed limit c.
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