A Laser arriving before it leaves.

F

FoxHound

Temporal Novice
it's me again with more hear-say. another friend of mine was telling me about an article she read about a laser that in certian conditions would arrive before it's shot.

i know it sounds weird. but i am hoping someone knows about this or knows of the article. it would be much appreciated.
 
thats sort of right, a laser pulse was shot through a medium of gas, where it emerged from the other side before it should have. i think it just sped up, didnt actually do any kind of time travel. and the nature of the laser on exit prevented it from storing any kind of data if i recall correctly.
 
Here's link which is a very good explanation of the experiment and which rigidly states that Einstein hasn't been prooved wrong:
Clarifying Einstein's Rules of the Road

As you can it was a single wave - or quanta that was used in the determination of the experiment. The peak of the wave emerged from one side of the gas before it had finished entering the other side. There is no possible paradox - ie the wave cannot be stopped from entering the gas by the implication of the wave exiting.

/ttiforum/images/graemlins/smile.gif Hope that helps.
James
 
thank you very much for the link. i really appreciate it.

i read the article and i would say i understood 85% of it. haha. does this have anything to do with a possibility of time travel? or is it simply light related? they mentioned not being about transmit any information through the light, but does anyone know if they have any ideas on how to expand the time lapse between the light appearing and the light entering. perhaps enough time to transmit information.

i guess i am asking if anyone knows of any articles about these guys expanding what they are doing into a form of time travel.
 
they mentioned not being about transmit any information through the light, but does anyone know if they have any ideas on how to expand the time lapse between the light appearing and the light entering. perhaps enough time to transmit information.
Click to expand...

Unfotunately the 'time lapse' is shorter than the time period the pulse of light would need to transverse the tank. It cannot be any longer than this time limit. If I remember correctly the pulse is broken down and reconstructed by the gas instantaeneous thus giving the impression that light broken its own speed limit. It's kinda like the transporter in Star Trek. Only a lot less useful.

James
 
I wonder if they could develop a merium that would do that to matter,

but would the medium have to not be matter or else it would just dissapere?
 
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