Area vectors of oriented surfaces

mathwizeguy · Dec 6, 2010

Are area vectors of oriented surfaces always perpendicular to the surface?

tiny-tim · Dec 6, 2010

welcome to pf!

ih mathwizeguy! welcome to pf!

mathwizeguy said:

Are area vectors of oriented surfaces always perpendicular to the surface?

simple answer … yes!

lugita15 · Dec 6, 2010

Also, you should know that the convention is for the area vector to point out of the surface.

HallsofIvy · Dec 6, 2010

lugita15 said:

Also, you should know that the convention is for the area vector to point out of the surface.

Such a convention would only hold for a closed surface. You can, more generally, refer to "upward" or "downward" normals, "inward" or "outward" normals, etc.

Area vectors of oriented surfaces

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Area vectors of oriented surfaces

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