MadSci Network: Physics

Subject: Does light really move?

Date: Tue Dec 7 16:01:33 2004
Posted by chesley
Grade level: undergrad School: No school entered.
City: athens State/Province: ga Country: usa
Area of science: Physics
ID: 1102456893.Ph

A photon doesn't seem to "experience" time, so does it really "experience" 
space? "Experience" is probably not the best word to use here but, if light 
doesn't move, would entanglement be explained. As if (we/slow moving objects) 
move in between aspects of the (photon/light)? 

What I'm imagining is light as a (marker of where mass was at some point in 
time/disturbance in space-time). I don't understand how it could really ever be 
separated from that point in time. An object that emits light would actually be 
an object that disturbed space-time. The object itself must move away from that 
point in time, while the light is anchored there. Our perception of an 
entangled photon is that we affect it here, and its entangled partner is 
affected instantaneously over there. But if we were observing from the 
(perspective/"experience") of light, would there be any difference between here 
and there, or is the effect happening to two aspects of the same thing in the 
same place and time?

In thinking of this I also wondered if the strings in string theory could be 
the mathematical description of an event horizon. The most energetic electro-
magnetic waves come from near a black hole, which is a massive disturbance in 
space-time. Would this help explain dark matter and the expansion (or, in this 
case, implosion) of the universe?

Re: Does light really move?

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