radiant flux density

radiant flux density

[′rād·ē·ənt ¦fləks ′den·səd·ē]
(electromagnetism)
The amount of radiant power per unit area that flows across or onto a surface. Also known as irradiance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.