[s-cars] xenons in fog lamps?

[LL - NY]

>From the Physics Teacher's perspective, pure white with a blue bias light
has a larger amount of shorter wavelength light than yellow or selective
yellow light. Shorter waves tend to scatter more (i.e. glare) than longer
waves, which refract less. Hence Daniel's recomendation, is based upon
sound scientific principles. Fogs are intened to be used in high glare
situations. In the situation of S-Fest, in which the fog was entirely in our
minds, pure candlepower is all that mattered, in which case, HID's in
as many fixtures as possible (heh, let's try the corner's!) adds to the 
dazzle effect and sure looks impressive. So, as in my first post, if your
goal is to improve your driving visibility, you would want incandescent
lighting for your fogs, or IF you insist on HID's, some form of dichroic
coating to selectively eliminate the short wavelength light (i.e. blue) to
decrease the glare. However, since it's simpler to simply stick by simple
H3/H1 or whatever incandescent bulbs, do that. I didn't want to say "I
told you so when I first posted, I figured go to the source, make a decision, 
go from there". Too bad the fogs in our S-lamps aren't adaptable to the HID
bulbs, there, the increased lumens of longer wavelengths (IR doesn't contribute
whatsoever to vision) would extend the range of the fogs w/o increased 
glare.

LL - NY


On Tue, 15 Feb 2005 14:29:45 -0800, Gabriel Caldwell <gabriel at ts.bc.ca> wrote:
> This argument comes up every so often.  Some people (no names) claim
> that Daniel Stern is biased because he does not sell HID kits.  I think
> if Daniel Stern wanted to he could sell HID kits, heck I could sell HID
> kits if I wanted to.  There must be some reason he chooses not to sell
> HID kits.  I find his website quite compelling and I'm sure that's why
> Sean Douglas chose to buy OEM S6 HIDs at great expense rather than to
> use an HID retrofit kit in projectors that were never designed for HID.
> 
> Gabriel Caldwell
> 
> 
> -----Original Message-----
> From: Tom Green [mailto:trgreen at comcast.net]
> Sent: February 15, 2005 8:07 AM
> To: s-car-list at audifans.com
> Subject: Re: [s-cars] xenons in fog lamps?
> 
> Emre.
> 
> The s-car fog lights are for a different kind of fog.  Although the
> HID's may shine
> through the late-night s-fest induced fog, that is just in your head.
> ;-)   The fogs
> don't have a suitable adjustment to eliminate the bloom from too much
> light on the
> pavement near the front bumper and thus hinder visibility up the road
> on a foggy
> night that nature produces.
> 
> Tom '95 S6
> 
> On Feb 15, 2005, at 9:37 AM,  Emre Washburn <yumyjager at gmail.com> wrote:
> 
> > I have HID bulbs in the fogs on my //S, let me be the first to tell
> > you that Daniel's obviously biased writings are wrong. Just ask the
> > crowd that staid late at //S Fest '04. They were "Blinded by the
> > light, reved up like a  . . ."
> >
> > FWIW, mine emit a very white light from the fogs, whitest of all my
> > HID's.
> 
> > On Tue, 15 Feb 2005 09:31:07 -0500, Lee Levitt <lee at wheelman.com>
> > wrote:
> >> LL - writes:
> >>>
> >>> Go to www.danielsternlighting.com to learn of the
> >>> "benefits" of all Xenon lighting (or not). If the true
> >>> goal of any mods is to improve visibility, you'll pay
> >>> attention to what he has to say.
> >>
> >> For those web-impaired readers, here's what Daniel says:
> >>
> >> "Good (and legal) fog lamps produce white or Selective Yellow light,
> >> and use
> >> tungsten-halogen bulbs. Xenon or HID bulbs are inherently unsuitable
> >> for use
> >> in fog lamps, and blue or other-colored lights are also the wrong
> >> choice"
> >>
> >> May *look* better, but will reduce your visibility, not increase it.
> >> Not the
> >> trade-off I'm looking for.
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>