How many foot-candles are in a 60 watt bulb?
What is the level of lighting that is adequate? The light intensity of 20 foot candles is approximately the same as a 60 watt bulb at a clear distance. How many watts is 50 foot candles? 0.805 watt per square meter is the result of 538 lm x 0.001496 watt. The 50 foot candles are […]