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Solving a problem in physics section 13 point 88 optics
88. The parallel beam carrying a uniform luminous flux density j = 200 lm / m 2 falls on a flat surface, the outer normal to the direction which forms a beam angle α = 120°. What is the illumination E of the surface?
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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Discount for regular customers! If the total of your purchases from the seller
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