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Topic Title: Point to Point Lighting calculation
Topic Summary: How to cal. the (wall) reflection of Point to Point Lighting cal.
Created On: 26 January 2008 08:11 AM
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 26 January 2008 08:11 AM
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Samuel Chan

Posts: 210
Joined: 02 August 2002

I know the P2P Lighting Cal. formula. Anyone can advise me any formula to cal. the lighting from reflection of walls, ceiling to floor.

Can I assume that the wall is a mirror with certain reflection index, say 0.8. Then I use the general P2P formula with, Distance= Ltg to wall + Wall to floor, Illuminance = E at that angle x 0.8?

Samuel Chan
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