Blue headlights?

["scott miller" <macatawa@hotmail.com>]

>are there the new technology bulbs - the bright blue/white
>ones A8 etc - to fit the old motors - Urq etc, or is it all totally
>different?
>

Why blue/white headlights?  They aren't really brighter, just more 
dazzling because of the way they reflect and scatter inside the eye.  
Shorter wavelength light tends to scatter more easily; lights up fine 
particles like haze, fog, snow, and mist from wet tires better; dazzles 
oncoming drivers more; reduces contrast; impairs night vision; all kinds 
of bad ju-ju.  Amber fog lights, blue reflective optical lenses, "Blue 
Blocker" sunglasses, and red cockpit lighting are all attempts to keep 
the blue end of the optical spectrum away from your eyes, especially at 
night.  The blue/white does look cool, if that's your priority.

Sorry for the rant, this used to be my field.

Scott Miller
Holland/Selfridge ANGB
'90 200tqw


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