Question: What's a lumen? Question 15Answer a. Light emitted within one steradian by a standard candle. b. Light emitted by a standard candle in a 1

What's a lumen? Question 15Answer a. Light emitted within one steradian by a standard candle. b. Light emitted by a standard candle in a 1 ft. radius sphere. c. Light emitted by a 1 candlepower source

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