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[Phys-L] Re: Area vector

On Tuesday, March 29, 2005, at 02:27 PM, Tony Wayne wrote:
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 Wayne

Cool Question; I like these. Maybe because parallel is
under-specified; there are an infinite number of vectors parallel to a
surface (think of number of lines in a plane). Perpendicular limits
you to 2 directions separated by 180deg only (pretty unique with
trivial redundancy).

Dan MacIsaac, Assistant Professor of Physics, SUNY-Buffalo State College
222SCIE BSC, 1300 Elmwood Ave , Buffalo NY 14222 USA 716-878-3802
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