In chemical kinetics, the reaction half-life is the time needed for half of a reactant in a chemical reaction to be depleted. It is the same as the nuclear half-life involved in nuclear decay, which is a first-order reaction.
Famous quotes containing the words reaction and/or life:
“An actor must communicate his author’s given message—comedy, tragedy, serio- comedy; then comes his unique moment, as he is confronted by the looked-for, yet at times unexpected, reaction of the audience. This split second is his; he is in command of his medium; the effect vanishes into thin air; but that moment has a power all its own and, like power in any form, is stimulating and alluring.”
—Eleanor Robson Belmont (1878–1979)
“Greater love hath no man than this, that a man lay down his life for his friends.”
—Bible: New Testament Jesus, in John, 15:13.
In Ulysses, James Joyce wrote, “Greater love than this ... no man hath that a man lay down his wife for his friend.”