Physics Re: what happens to light from a flashlight shined into space?
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 Re: what happens to light from a flashlight shined into space?
Author: Ian Terry (---.mclnva23.covad.net)
Date:   11-02-05 10:08

If the light makes it past all the waste we have in our atmosphere, the gravitational pull of the earth is nowhere even near powerful enough to pull the light around and make it come back to earth.

If it's an incredibly powerful flashlight it could just keep going for quite a while. The more it runs into different types of matter the more it gets absorbed and becomes a weaker beam of light. also flashlights aren't focused light their spread out alot. so by the time it reaches a few hundred miles our of our atmosphere, or even a few miles out of our atmosphere it will probably disperse to much to be no longer visible as a beam of light.

Thats where the experiment to compare the light from the sun to a light from a flashlight. the light from the flashlight is still expanding rapidly, the light from the sun is not.

I don't know about your question about the Quantum mechanics of it all, but basically it will be dispersed and absorbed by the time it makes it out of our atmosphere.
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 Topics Author  Date
 what happens to light from a flashlight shined into space?  new
Chris Salisbury 10-16-05 22:03 
 Re: what happens to light from a flashlight shined into space?  new
Ian Terry 11-02-05 10:08 

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