On Thu, 12 Aug 1999 16:25:29 -0400 "Russell Garber" <RussG@mtlusa.com>
writes:
snip,
CHOP
> Visible light (or detectable light) on the other hand only
>becomes visible when these particles are charged and are
>only visible from the point where they are charged .........
Think about the idea (for me, it is a fact) that there is no such
thing as visible light.
Light, itself, is not visible. It has to interact with matter for
matter to be visible but I can not see light. If light were visible,
it would appear to us as a solid just as much as anything else does.
The beam from a HeNe laser would appear to be a round red rod
between the output of the laser and the round red spot on the wall.
The direct sunlight shining through the window onto the floor illuminates
the floor and only the dust particles in between. If light were visible,
it would appear to be a solid trapezoid (or something similar) with the
window and illuminated section of the floor as "sides".
Imagine standing in your front yard at noon and looking across the
street.
Light is everywhere, and just as the air is touching your face and
everything
you can see, so is light. Imagine the air is visible and the color white.
You could not see past your face any better than you could if you were
at the bottom of a swimming pool filled with milk.
Imagine light is the color white....................................
These examples are based on complete opacity but even if light were
less opaque and perhaps only a bit translucent, it definitely would have
a different visual effects than it does.
If anyone can thing of an instance were light is ACTUALLY visible,
I would appreciate hearing about it!
Another two copper plated zinc disks worth.
David
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