A nit is a unit of luminance equal to one candela per square metre. It is often used to quote the brightness of computer displays, which typically have luminances of 200 to 300 nits.
... Sally Rand[?], dancer (+ 1979)
April 7 - Ralph Bunche[?], diplomat, winner of the Nobel Peace Prize
April 16 - Fifi D'Orsay, actress (+ 1983)
April 22 - Robert ...