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» Nauvoo Forum » Nauvoo Classic Forum » General Discussions » When science fiction become reality

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Author Topic: When science fiction become reality
palmon
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Scientist find particle that travels faster than light

quote:
A pillar of physics — that nothing can go faster than the speed of light — appears to be smashed by an oddball subatomic particle that has apparently made a giant end run around Albert Einstein's theories.
Scientists at the world's largest physics lab said Thursday they have clocked neutrinos traveling faster than light. That's something that according to Einstein's 1905 special theory of relativity — the famous E (equals) mc2 equation — just doesn't happen.

Mind-Reading Experiment Reconstructs Movies in Our Mind

quote:
It sounds like science fiction: While volunteers watched movie clips, a scanner watched their brains. And from their brain activity, a computer made rough reconstructions of what they viewed.





[ September 22, 2011, 07:32 PM: Message edited by: palmon ]

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rayb
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fwiw, at this point the speeding neutrinos are a mystery, and they think they've got an error in their system that makes them THINK they're seeing them faster than they really are.

--Ray

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Randy
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I suspect Ray's right about the error. The difference is so small.

As the article asked, why don't neutrinos that come from distant galaxies seem to get here sooner than the light does?

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Randy
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That machine that reconstructs movie scenes based on brain activity, however, rather blows my mind.
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FlyByNight
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quote:

As the article asked, why don't neutrinos that come from distant galaxies seem to get here sooner than the light does?

I didn't find that particular question in the article, so I don't know the context. However, I am curious as to the reasoning behind the thought. What is the reason to believe that a particular neutrino from a solar source left at the same time as the light?
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Randy
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It appears that the article has been edited. The paragraph I was referring to now just says "Why hasn't this been detected before?"

When supernova 1987A from one of the Magellanic clouds was detected, the neutrinos were detected three hours before the light was. This was attributed to the idea that the explosion took three hours to reach the surface of the star. The neutrinos would have arrived years ahead of the light with the discrepancy that the article discusses.

See this site.

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Jean Valjean
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Yep, Randy. The Supernova 1987A delay between photons and neutrinos is remarkably close to theoretical calculations of the shock breakout time. On that basis, I think the smart money is that the CERN result is some kind of systematic error rather than new fundamental physics.
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palmon
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Guess the fat lady is not singing yet.

2nd test affirms faster-than- light particles

[ November 18, 2011, 01:29 PM: Message edited by: palmon ]

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mhooner
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I believe that it is quite possible that just as there are particles that cannot exceed the speed of light, there are also particles that cannot move slower than the speed of light.

And me may yet discover particles that can exist on both sides of the speed of light.

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Jean Valjean
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A particle that moves faster than light is a particle that can violate causality. In other words, it can move backwards in time.
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mhooner
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I wonder if ultimately that is what eternal life is, the ability to see the end from the beginning or the beginning from the end.

God says that all things are before Him and time is measured only unto man.

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Shane
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I guess warp speed is practical after all. [Big Grin]
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Zeta-Flux
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If we assume that anything traveling faster than the speed of light is going back in time, and we compare that with the fact that God is in all things and through all things, simultaneously, that has some serious repercussions regarding causality/temporality from God's viewpoint.
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Jean Valjean
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In the eternities, who knows that laws of physics prevail?

But in our fallen world, causality seems to be an important and binding principle.

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