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)
“We devastate them unreligiously,
And coldly ask their pottage, not their love.
Therefore they shove us from them, yield to us
Only what to our griping toil is due;
But the sweet affluence of love and song,
The rich results of the divine consents
Of man and earth, of world beloved and lover;
The nectar and ambrosia, are withheld.”
—Ralph Waldo Emerson (1803–1882)