247 news ☑
c :: Neutrinos found to break speed of LIGHT . [but maybe only in Italy ;-] -
September 22, 2011
"Antonio Ereditato, spokesman for the researchers, said that measurements taken over three years showed neutrinos pumped from CERN near Geneva to Gran Sasso in Italy had arrived 60 nanoseconds quicker than light would have done: "We have checked and rechecked for anything that could have distorted our measurements but we found nothing. We now want colleagues to check them independently." If confirmed, the discovery would undermine Einstein's 1905 theory of special relativity, which says that the speed of light is a "cosmic constant" and that nothing in the universe can travel faster. That assertion, which has withstood over a century of testing, is one of the key elements of the so-called Standard Model of physics, which attempts to describe the way the universe and everything in it works. The totally unexpected finding emerged from research by a physicists working on an experiment dubbed OPERA run jointly by the CERN particle research centre near Geneva and the Gran Sasso Laboratory in Italy." -
details of the experiment from OPERA:
via Pasquale Migliozzi \\ some reactions... "Extraordinary claims require extraordinary evidence, and this is an extraordinary claim," said eminent cosmologist and astrophysicist Martin Rees. \\ "It is premature to comment on this," said Stephen Hawking. "Further experiments and clarifications are needed." -
2011.09.23 live webcast of announcement and discussion
-- once the webcasted event is over, its video will be made available for offline viewing on the CERN Document Server (CDS),
\\ "New results from OPERA on neutrino properties" Dario Autiero,
Michio Kaku, Nov 2011 update: "a rough consensus seems to be emerging among physicists that the CERN result is wrong. The startling experiment depends on one number, the distance from CERN Switzerland to the detector in Italy. Physicists used the GPS satellite to measure the distance but the GPS system itself uses relativity to calculate distances. Perhaps the CERN physicists did not accurately take into account the distance from the earth to the satellite and the relativistic effects of the satellites themselves. Since the result has to be correct to 20 parts per million, there are extremely small second-order effects that have to be recalibrated very carefully. Some physicists claim that the missing 60 feet lies in a slight miscalibration. Personally, I believe that the CERN physicists miscalibrated this distance."
22 Feb 2012 !! "Discrepancy appears to come from a bad connection between a fiber optic cable that connects to the GPS receiver used to correct the timing of the neutrinos' flight and an electronic card in a computer. After tightening the connection and then measuring the time it takes data to travel the length of the fiber, researchers found that the data arrive 60 nanoseconds earlier than assumed. Since this time is subtracted from the overall time of flight, it appears to explain the early arrival of the neutrinos."
comment on the *aftermath* by Jay Wacker, Professor at Stanford University in Particle Physics:
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