(thing) by PaSTE Sat Jun 17 2000 at 19:32:10

The SI standard for measure of luminance. The 11th Conférence Générale des Poids et Mesures (1960) defines it as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 × 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.

del.icio.us Facebook Digg StumbleUpon Reddit (I like it!)
Y'know, if you log in, you can write something here, or contact authors directly on the site. Create a New User if you don't already have an account.