MEASURING ONE FOOT CANDLE -- ABRAHAM LINCOLNíS LIGHT
CD 1964025 E&MP26.009
December 30, 1942
This is an example of one footcandle of light (that which Abraham Lincoln read by in his early youth) as demonstrated in the General Electric Illuminating Laboratory at Schenectady, N.Y. The light is produced by a tiny electric lamp producing one candlepower and placed in the center of a one foot radius sphere. An engineer is shown reading a book under the illumination.