POV-Ray : Newsgroups : povray.general : POV Photons : Re: POV Photons Server Time
7 Aug 2024 13:18:08 EDT (-0400)
  Re: POV Photons  
From: Timothy R  Cook
Date: 19 Nov 2001 05:16:52
Message: <3BF8DB9D.E7FA7611@scifi-fantasy.com>
Warp wrote:
> What happens when the photon "hits" a refractive object?
> Why does it "bend" at the surface of the object? Why does
> it seem to go slower through the object?

Because it DOES go slower through the object.  The line is
'nothing travels faster than the speed of light *in a vaccuum*'.
If you pass the light through an object, it isn't going as
fast as in vaccuum.

(refer to
http://www.fnal.gov/pub/inquiring/questions/quesrelativity.html
for other related topics...)

> How, for example, electrons can travel in water faster
> than photons can (ie. why don't electrons collide in the
> same way as photons; electrons are a lot bigger)?

The explanation for that is: electrons don't travel, they're
pushed aside thusly:

-> -> ->e eeeeeeeeeeeeeee

         *thunk*
         eeeeeeeeeeeeeeee

          *shove*
          eeeeeeeeeeeeeeee

          eeeeeeeeeeeeeee  -> -> ->e
-- 
Tim Cook
http://empyrean.scifi-fantasy.com

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