Famous equations usually have simple histories. The harmonic oscillator was passed down from Robert Hooke, and Laplace’s equation was, well, Laplace. But fittingly, the continuity equation just ...

Continuity Equation When a fluid is in motion, it must move in such a way that mass is conserved. To see how mass conservation places restrictions on the velocity field, consider the steady flow of ...

Continuity Equation When a fluid is in motion, it must move in such a way that mass is conserved. To see how mass conservation places restrictions on the velocity field, consider the steady flow of ...