Eric
The math of parabolas states that the width of a parabola at the
level of the focal point is 4 times the focal point. So each of the
parabolic dishes have a depth equal to its focal length.
So the 18" has a depth of 4.5" and the 24 inch has a depth of 6".
Greg Kunkel
Greg Kunkel
--- Eric Benjamin <> wrote:
> I'm curious. I've seen this parabolic reflector on
> the Edmund Scientific web site, and they specify the
> diameter and the focal length, but not the depth of
> the dish. What is the depth of the dish?
>
> Eric
>
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