Re: [ATM] Black Powder _OT

[Dave Smith <smithersscope@yahoo.com>]

There's a fellow around the corner that put a coating
of some sort on the entire OUTSIDE surface of his
truck (well, everywhere but the headlights and
taillights and windows) and then painted it black.
It's the weirdest vehicle I have ever seen; it looks
like an optical illusion. I saw the guy driving down
the street one night and had to look 3 or 4 times to
figure out what I was seeing....tail lights and an
absence of light between them, period. NOTHING else
was visible.
If you could find the "flocking" type material this
guy sprayed on his truck and put it inside a scope,
I'm almost convinced it would absorb ALL light that
entered the tube.

Now, don't ask me why someone would want a practically
invisible-in-the-nighttime truck. Maybe he moonlights
as Batman?
(grin)
Dave


--- Richard Schwartz <richard1941@gmail.com> wrote:

> The blackest thing I know is the aperture of a large
> cavity that is nearly
> black inside.  

 
> Most black coatings (I have no experience with
> powder) provide specular
> reflection at grazing angles, so it is important to
> keep the surface area
> subject to grazing incident light minimized.  I
> guess this means that
> baffles should have sharp edges.
>


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