Quantum Yield
The quantum yield (Φ) of a radiation-induced process is the number of times a specific event occurs per photon absorbed by the system. The "event" is typically a kind of chemical reaction.
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Famous quotes containing the words quantum and/or yield:
“A personality is an indefinite quantum of traits which is subject to constant flux, change, and growth from the birth of the individual in the world to his death. A character, on the other hand, is a fixed and definite quantum of traits which, though it may be interpreted with slight differences from age to age and actor to actor, is nevertheless in its essentials forever fixed.”
—Hubert C. Heffner (1901–1985)
“Never yield to that temptation, which, to most young men, is very strong, of exposing other people’s weaknesses and infirmities, for the sake either of diverting the company, or of showing your own superiority. You may get the laugh on your side by it for the present; but you will make enemies by it for ever; and even those who laugh with you then, will, upon reflection, fear, and consequently hate you.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)