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Hundreds of particle physicists are descending once more on the sleepy village of Tokai-mura in Eastern Japan. Over the next week we will discuss the present and future of an experiment that many have devoted several years of their lives to. An experiment that will forge a path into a new era of understanding the creation of our Universe. The ND280 detector , part of T2K. The Tokai to Kamioka experiment (T2K for short) restarted last month, a year after the massive eastern Japanese earthquake shut it down after just months of operation.
It appears that the faster-than-light neutrino results , announced last September by the OPERA collaboration in Italy, was due to a mistake after all. A bad connection between a GPS unit and a computer may be to blame. Physicists had detected neutrinos travelling from the CERN laboratory in Geneva to the Gran Sasso laboratory near L'Aquila that appeared to make the trip in about 60 nanoseconds less than light speed. Many other physicists suspected that the result was due to some kind of error, given that it seems at odds with Einstein's special theory of relativity, which says nothing can travel faster than the speed of light. That theory has been vindicated by many experiments over the decades. According to sources familiar with the experiment, the 60 nanoseconds 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.
Taiwan helps build giant neutrino observatory NTU cosmology professor Chen Pi-sin is on location in Antartica overseeing Taiwan’s work on the international neutrino observatory. (CNA)
You wait decades for discoveries that could revolutionise physics, then three come along at once "THE universe is not only queerer than we suppose, but queerer than we can suppose," as geneticist J. B. S.
<img class="alignnone size-full wp-image-86925" title="CNGS_layout_(OPERA_experiment)" src="http://www.wired.com/images_blogs/wiredscience/2011/11/CNGS_layout_OPERA_experiment.jpg" alt="" width="660" height="495" /> Results from a second experiment uphold the observation that neutrinos are moving faster than the speed of light. The OPERA collaboration , which first reported the superluminal neutrinos in September, has rerun the experiment and detected 20 new neutrinos breaking Einstein’s theoretical limit.
By Stephen Ornes / November 9, 2011 Neutrinos are tiny, ghostly particles zipping through everything, all the time. This image comes from a computer model that scientists built to help look for neutrinos. The yellow dots are photons, or particles of light, produced by a neutrino as it entered a detector. Credit: Lawrence Berkeley National Laboratory In September, European scientists reported on tiny particles called neutrinos that traveled faster than the speed of light.
By Frank Close To readers of Neutrino , rest assured: there is no need yet for a rewrite based on news that neutrinos might travel faster than light. I have already advertised my caution in The Observer , and a month later nothing has changed. If anything, concerns about the result have increased. The response to my article created some waves. There were a couple of cogent remarks on The Observer’s comments section .
This phenomena may have been explained . The crux of the problem had to do with differing reference frames - the distance traveled according to the satellites which measured the time was different from the distance traveled according to us on earth. If you're going to measure speed (distance / time), you have to get the distance and time both from the same reference frame.
It is a concept that forms a cornerstone of our understanding of the universe and the concept of time – nothing can travel faster than the speed of light. But now it seems that researchers working in one of the world's largest physics laboratories, under a mountain in central Italy, have recorded particles travelling at a speed that is supposedly forbidden by Einstein's theory of special relativity. Scientists at the Gran Sasso facility will unveil evidence on Friday that raises the troubling possibility of a way to send information back in time, blurring the line between past and present and wreaking havoc with the fundamental principle of cause and effect. They will announce the result at a special seminar at Cern – the European particle physics laboratory – timed to coincide with the publication of a research paper ( pdf ) describing the experiment.
The physics world is abuzz with news that a group of European physicists plans to announce Friday that it has clocked a burst of subatomic particles known as neutrinos breaking the cosmic speed limit — the speed of light — that was set by in 1905. If true, it is a result that would change the world. But that “if” is enormous. Even before the European physicists had presented their results — in a paper that appeared on the physics Web site arXiv.org on Thursday night and in a seminar at , the European Center for Nuclear Research, on Friday — a chorus of physicists had risen up on blogs and elsewhere arguing that it was way too soon to give up on Einstein and that there was probably some experimental error. Incredible claims require incredible evidence.
Sometimes discoveries in science turn up where you are looking for them, like finding treasure near a shipwreck. At other times they seem to appear from nowhere, as if they’ve fallen from the sky. In particle physics there are plenty of examples of both kinds, but all discoveries have one thing in common. As soon you find something new – whether it’s expected or completely out of the blue – you go back through the analysis with a fine tooth comb, making sure that you’ve missed nothing.
Particle physicists detect neutrinos travelling faster than light, a feat forbidden by Einstein's theory of special relativity Ian Sample in The Guardian : It is a concept that forms a cornerstone of our understanding of the universe and the concept of time – nothing can travel faster than the speed of light. But now it seems that researchers working in one of the world's largest physics laboratories, under a mountain in central Italy, have recorded particles travelling at a speed that is supposedly forbidden by Einstein's theory of special relativity. Scientists at the Gran Sasso facility will unveil evidence on Friday that raises the troubling possibility of a way to send information back in time, blurring the line between past and present and wreaking havoc with the fundamental principle of cause and effect.
Scientists at the European Organization for Nuclear Research (CERN) say they have measured tiny subatomic particles traveling faster than light. Skip to next paragraph Subscribe Today to the Monitor Click Here for your FREE 30 DAYS of The Christian Science Monitor Weekly Digital Edition