- physics the principle that in a liquid flowing through a pipe the pressure difference that accelerates the flow when the bore changes is equal to the product of half the density times the change of the square of the speed, provided friction is negligible
Word Origin for Bernoulli's principle
C19: named after Daniel Bernoulli
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
named for Dutch mathematician Daniel Bernoulli (1700-1782), who published it in 1738.
Online Etymology Dictionary, © 2010 Douglas Harper