- #1
karush
Gold Member
MHB
- 3,269
- 5
View attachment 4671
how high h must the bulb in the figure be if point
is right on the edge of the illuminated region.
hopefully if the is setup ok what is next?
how high h must the bulb in the figure be if point
is right on the edge of the illuminated region.
hopefully if the is setup ok what is next?
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