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[Phys-L] Re: Area vector



----- Original Message -----
From: "Tony Wayne" <wayne@PEN.K12.VA.US>

Does any one know why the "area vector" for a surface is defined as
being normal to the plane of the surface instead of parallel to the
plane of the surface?
-Tony


I don't know about the origins here (chicken and the egg), but it is
necessary for calculating vector flux, such as in Gauss' Law.

Rick

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rtarara@saintmarys.edu
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