| Re: mind my asking: v/c index when light travels trough vacuum/glass/vacuum? |
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Group: alt.philosophy · Group Profile
Author: tadchemtadchem Date: Sep 19, 2008 13:41
On Sep 19, 12:42В pm, dedanoe gmail.com> wrote:> assume light travels from in.vacuum to in.glass and back again
> in.vacuum: its speed will deccelerate from c to v and agian accelerate
> from v to c.
Wrong.
> how do you explian the acceleration?
There is no acceleration.
> i mean does light
> behave like p-mobile with renewable energy or so?
Light travels at c in a vacuum. That includes the vacuum between
atoms in matter.
Light traveling "through" an atom is absorbed, and then normally re-
emitted at exactly the same polarization, speed (c) and frequency,
with a slight time delay due to interactions with the electromagnetic
fields within the atom.
For details see any comprehensive text on Special Relativity. Also
research "polarizability" and the dielectric constant, as colligative
properties of matter.
A good text on the theory of the complex refractive index may also be
helpful.
Tom Davidson
Richmond, VA
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