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Zonal Cavity Lighting Calculation

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7JLAman4

Electrical
Nov 28, 2005
48
Re: the Percent Effective Cavity Reflectance table. I'm attempting get a better understanding how to determine or calculate the values that are presented in this table. I understand that the method or formula that is used to derive the presented values is linear which allows linear interpolation for values of %Ceiling and %Wall Reflectances between the tabulated values. I'm looking for that "magic" formula that the table uses.
 
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