The bulk modulus ( or ) of a substance measures the substance's resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume. Its base unit is the pascal.
Read more about Bulk Modulus: Definition, Thermodynamic Relation, Measurement, Selected Values
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“The bulk of mankind believe in two gods. They are under one dominion here in the house, as friend and parent, in social circles, in letters, in art, in love, in religion; but in mechanics, in dealing with steam and climate, in trade, in politics, they think they come under another.”
—Ralph Waldo Emerson (1803–1882)