For example an outdoor scene under direct sunlight receives about 10 the light compared to the same scene under a fully overcast sky. The formula is the concise way to express the information in a symbolic way. The intensity at the farther distance can be found using the formula.
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C 1e0m012 2998 X 108ms. Its obvious that the light determines a rainbow. Th arcsin n 2 -1 12 -12 In the visible range th 58 for BK 7 n 1517 and 26 for fused silica n 146. Inverse Square Law Formula Questions.