faster than light, light

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Offline ukmicky

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faster than light, light
« on: 25/05/2005 19:13:43 »
A particle of light can travel ftl as shown in experiments when it was sent through a chamber of cesium atoms. my question is what then happens to that particle if after leaving the last atom of cesium it entered a vacuum

would it slow down releasing energy in some form

keep going but change into some form of exotic matter and maybe losing energy as light  
or does the way that it transmits itself through the cesium atoms allow it to exit at the speed that light travels through a vaccuum
or are my questions silly

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Offline daveshorts

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Re: faster than light, light
« Reply #1 on: 25/05/2005 20:50:49 »
Do you have any links to the experiment as there are several possibilities of what is happening depending on what exactly the experiment was.

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Offline ukmicky

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Re: faster than light, light
« Reply #2 on: 26/05/2005 01:26:43 »
this is the first one from the list when i googled it http://archives.cnn.com/2000/TECH/space/07/20/speed.of.light.ap/
it was a pulse from a lazer
« Last Edit: 26/05/2005 01:31:41 by ukmicky »

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Offline gsmollin

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Re: faster than light, light
« Reply #3 on: 26/05/2005 16:30:40 »
According to the researchers, the exit beam has the same properties as the entrance beam, with a reduced amplitude.

I would urge some caution here, this is new work, and has not been verified. There have been claims of this type in the past, that were found to have no merit. People have been passing light beams through cesium gas for many years, without seeing superluminal velocities. I am skeptical.
"F = ma, E = mc^2, and you can't push a string."

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Offline qazibasit

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Re: faster than light, light
« Reply #4 on: 10/06/2005 12:48:41 »
hmmm
"There is never too late to make a change".