Just a really quick sanity check. This equation...(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\nabla[/tex]sU = [tex]\nabla[/tex]U - n*(n [tex]\bullet[/tex] [tex]\nabla[/tex]U)

...the correct equation for the surface gradient given [tex]\nabla[/tex]U is the gradient of the surface and n is the normal unit vector?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# The surface gradient.

**Physics Forums | Science Articles, Homework Help, Discussion**