Can someone answer theis question and show me how?
What is the illuminatiin on a surface 4.0m below a 100-watt lamp thst emits a luminous flux of 1075lm?
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Can someone answer theis question and show me how?
What is the illuminatiin on a surface 4.0m below a 100-watt lamp thst emits a luminous flux of 1075lm?