the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber
2
interaction of a particle and its antiparticle results in annihilation and the production of radiant energy
3
a sudden intense burst of radiant energy n
4
n a sudden intense burst of radiant energy n a momentary brightness n a short vivid experience n a sudden brilliant understanding n a very short time (as the time it takes the eye to blink or the heart to beat) n a gaudy outward display n a burst of light used to communicate or illuminate n a short news announcement concerning some on-going news story n a bright patch of color used for decoration or identification n a lamp for providing momentary light to take a photograph v gleam or glow intermittently v appear briefly v display proudly
5
not transmitting or reflecting light or radiant energy
