Monday, April 2, 2012

Particles that Travel Faster than Light?

Last year, Einstein's theory that nothing can travel faster than the speed of light was challenged.

The scientists who appeared to have found in September that certain subatomic particles can travel faster than light have ruled out one potential source of error in their measurements after completing a second, fine-tuned version of their experiment.
Their results, posted on the ArXiv preprint server on Friday morning and submitted for peer review in the Journal of High Energy Physics, confirmed earlier measurements that neutrinos, sent through the ground from Cern near Geneva to the Gran Sasso lab in Italy 450 miles (720km) away seemed to travel faster than light.
The finding that neutrinos might break one of the most fundamental laws of physics sent scientists into a frenzy when it was first reported in September. Not only because it appeared to go against Albert Einstein's theory of special relativity but, if correct, the finding opened up the troubling possibility of being able to send information back in time, blurring the line between past and present and wreaking havoc with the fundamental principle of cause and effect.
The physicist and TV presenter Professor Jim Al-Khalili of the University of Surrey expressed the incredulity of many in the field when he said that if the findings "prove to be correct and neutrinos have broken the speed of light, I will eat my boxer shorts on live TV".

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More at: Neutrinos still faster than light in latest version of experiment

http://static.guim.co.uk/sys-images/Guardian/Pix/pictures/2011/11/18/1321583520339/Scientists-working-at-the-007.jpg

And the drama continues:

The head of an experiment that appeared to show subatomic particles travelling faster than the speed of light has resigned from his post.
Prof Antonio Ereditato oversaw results that appeared to challenge Einstein's theory that nothing could travel faster than the speed of light.
Reports said some members of his group, called Opera, had wanted him to resign.
Earlier in March, a repeat experiment found that the particles, known as neutrinos, did not exceed light speed.
When the results from the Opera group at the Gran Sasso underground laboratory in Italy were first published last year, they shocked the world, threatening to upend a century of physics as well as relativity theory - which holds the speed of light to be the Universe's absolute speed limit.
The experiment involved measuring the time it took for neutrinos to travel the 730km (450 miles) from Cern laboratory in Geneva, Switzerland to the lab in Italy.

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Apparently, it helps if you plug the cables in when you go to run an experiment on this level of significance, so you don't have to rework it a second time and look somewhat unprofessional.

Full article:  BBC News - Neutrino 'faster  than light' scientist resigns

Speaking of neutrinos, when both of my children are near each other, they create some sort of energy feedback loop that always ends in injury or damage to property. I call them my Flying Neutrinos as a result, as nothing seems capable of suspending their motion...

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