Date:         Sat, 8 Mar 2003 16:08:07 -0700
Reply-To:     Bill N <freeholder@STARBAND.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Bill N <freeholder@STARBAND.NET>
Subject:      Re: window tint (LONG)
Content-Type: text/plain; charset="iso-8859-1"

This was a very good discussion of why vehicles get hot.  I do have to point out that light
does not "slow down."  It loses energy, but the speed of light is a constant in any given
medium.  When it loses energy, UV becomes visible light, and visible light becomes infrared.

Also, while it is true that after several hours in the sun a tinted vehicle will be the same
temp inside as an untinted one (because the heat lost by conductance back to the outside is
balancing the heat gain from the sun), it is also true that the tinted vehicle will take longer
to reach this balance.  In other words, the inside will get hot more slowly.

Bill in the Southwest

----- Original Message -----
From: "Marc Perdue" <marcperdue@ADELPHIA.NET>
>
> that the light gets converted to heat when it hits objects inside the vehicle
> and gets slowed down.  The glass itself, and the other materials that light
> passes through, also slow the light down and convert it to radiant energy
> somewhat before it even hits anything inside your van.