How does one "fire a bean from a particle accelerator near Geneva to a lab 454 miles away in Italy"??
Speed-of-light experiments yield baffling result at LHC
101–110 of 255 posts
Re: Speed-of-light experiments yield baffling result at LHC
#102Tesla postulated that there are faster speeds than light-speed... so he might have been right after all.
Or maybe he was just thinking of ludicrous speed.
Re: Speed-of-light experiments yield baffling result at LHC
#103discussion by people who actually know stuff: http://blog.vixra.org/2011/09/19/can-neutrinos-be-superlumin...
Re: Speed-of-light experiments yield baffling result at LHC
#104I wonder how accurate their time measurements are. If nothing can exceed the speed of light, what makes them think they can rig together hardware that will accurately measure speed at that magnitude?
Re: Speed-of-light experiments yield baffling result at LHC
#105Earlier quoted context omitted.
I'm glad that it did take you so many words. I remember reading about this a while back, but could never remember what it was called, or why the light particles actually didn't break the speed barrier. I really appreciate your laymen explanation, and now, thanks to you parent, also know what the effect is called.
Think of the wagon wheels, as seen in a western movie, turning back, or moving at bizarre speeds in either direction. It's not a perfect analogy, but it's a related phenomenon.
That's called aliasing.
Re: Speed-of-light experiments yield baffling result at LHC
#106Similar results seem to have already been obtained in the past http://en.wikipedia.org/wiki/Neutrino#Speed QUOTE In the early 1980s, first measurements of neutrino speed were done using pulsed pion beams (produced by pulsed proton beams hitting a target). The pions decayed producing neutrinos, and the neutrino interactions observed within a time window in a detector at a distance were consistent with the speed of lig…
Experimental error seems likely to me once again. 10ns at c is 3 meters, over 730km + uncertainty in time of particle generation and decay + detector uncertainty...I don't buy it. From the project site: http://operaweb.lngs.infn.it/spip.php?rubrique41 OPERA needs an intense and energetic beam of muon neutrinos traveling a distance of hundreds of kilometers to seek for the appearance of oscillated tau neutrinos. A bea…
>I don't buy it
I didn't mean to try to 'sell' anything, though I agree that my comment was needlessly biased here. Revised it accordingly.
Re: Speed-of-light experiments yield baffling result at LHC
#107Similar results seem to have already been obtained in the past http://en.wikipedia.org/wiki/Neutrino#Speed QUOTE In the early 1980s, first measurements of neutrino speed were done using pulsed pion beams (produced by pulsed proton beams hitting a target). The pions decayed producing neutrinos, and the neutrino interactions observed within a time window in a detector at a distance were consistent with the speed of lig…
On a side note, it's pretty wild seeing history being written in Wikipedia. The BBC site has just been referenced on that part of the Neutrino article.
Re: Speed-of-light experiments yield baffling result at LHC
#108Earlier quoted context omitted.
Scientist rarely keep the data secret. It's the basis of peer review. There's a reason why open access journals (PLoS One) are getting so popular, scientists want to be known and publish. In my experience, ego is a currency much more valuable than money in academic circles.
The vast majority of the world's petroleum geologists keep their data secret.
But are they "doing science" or just doing a job?
Re: Speed-of-light experiments yield baffling result at LHC
#109Similar results seem to have already been obtained in the past http://en.wikipedia.org/wiki/Neutrino#Speed QUOTE In the early 1980s, first measurements of neutrino speed were done using pulsed pion beams (produced by pulsed proton beams hitting a target). The pions decayed producing neutrinos, and the neutrino interactions observed within a time window in a detector at a distance were consistent with the speed of lig…
> ... found the speed of 3 GeV neutrinos to be 1.000051(29) c.
What does the "(29)" in "1.000051(29) c" mean?
Re: Speed-of-light experiments yield baffling result at LHC
#110Similar results seem to have already been obtained in the past http://en.wikipedia.org/wiki/Neutrino#Speed QUOTE In the early 1980s, first measurements of neutrino speed were done using pulsed pion beams (produced by pulsed proton beams hitting a target). The pions decayed producing neutrinos, and the neutrino interactions observed within a time window in a detector at a distance were consistent with the speed of lig…
This article (http://www.google.com/hostednews/ap/article/ALeqM5in1T5nvGNc...) mentions previous results and that they were thought to be due to measurement error, but claims that these readings had a speed of c + 60 nS, with a measurement margin of error of +-10 nS.