From: Alan Bucknam (alan@notchcode.com)
Date: 01/14/03-02:54:01 PM Z
Some bulbs actually have a silver reflective coating on the rounded end
of the bulb, allowing light from the bulb to reflect back up towards
the bulb base. This is particularly nice when using it in applications
where you might accidentally look straight at the bulb. The light
intensity coming from the bulb will remain relatively the same, but it
is bounced away from the viewer, and diffused. Seen these bulbs used
for dining and theatrical applications...
-AB
On Tuesday, January 14, 2003, at 01:26 PM, Judy Seigel wrote:
>
> What happens when you block off a portion of a light bulb to prevent
> the
> light from going in a particular direction? I figure someone on this
> list
> will know... the question came up in another context, the issue being,
> is
> electricity wasted, or does ALL the light just get pushed in the other
> directions?
>
> And would all bulbs act the same way? Sodium vapor, halide, other?
>
> thanks in advance for any enlightenment....
>
> J.
>
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