Re: Fog lights

[PDQSHIP@aol.com]

In a message dated 95-09-07 17:05:53 EDT, you write:

>> I would second this.  Amber lights were reportedly used because that color
>> was supposed to penetrate the fog better.  Tests I read a long time ago
>> determined that there was no real advantage, and that as Phil siad all
>> you're doing is heating up the lens.
>> 
>
>Actually, this isnt true. (Speaking from many years of laser/optics 
>experience) Red is the preferred color for fog, but is illegal on the 
>front of cars, where amber is second best with yellow following. White 
>reflects off the water too much, where red will not.
>
>Theres a whole lot of math that goes along with it, but I didnt 
>understand it then, and I doubt I would today either..  :)

Thanks Bob for not adding to the nerdy discussion I almost did.......  Yes
the AMBER is better, esp in snow or dust, but you do give up light output vs
a clear lens.....   But, the object of a fog is to give depth of view, not
output of light......   Put a 100w bulb in the Hella rallye 2000's and run em
on a humid night, and the reflection of the atmosphere is pretty
high..........  BTDT

Scott