Changes

'''Fluid dynamics''' is the study of how [[fluid]]s move. Fluids include [[water]] and [[Gas|gases]] (such as [[air]]).<ref>http://virtualskies.arc.nasa.gov/glossary/F.html</ref> Fluid dynamics is also known as continuum mechanics, as fluids cannot be treated as point objects; [[Newton]]'s second law thus becomes Euler equation

'''Fluid dynamics''' is the study of how [[fluid]]s move. Fluids include [[water]] and [[Gas|gases]] (such as [[air]]).<ref>http://virtualskies.arc.nasa.gov/glossary/F.html</ref> Fluid dynamics is also known as continuum mechanics, as fluids cannot be treated as point objects; [[Classical_mechanics#Newton.27s_Three_Laws|Newton's second law]] thus becomes Euler equation

<math>\frac{D\mathbf{u}}{Dt} = - \frac{1}{\rho}\nabla p + \mathbf{g},</math>

<math>\frac{D\mathbf{u}}{Dt} = - \frac{1}{\rho}\nabla p + \mathbf{g},</math>