I have a slight conceptual problem with the use of a vector to represent a differential area (as used in calculating flux). It makes sense in a vetor field such as velocity, where each point has a speed and direction, but in the case of area where its magnitude is a measure of space it confuses me as to how that measurement of space can be made in an infinitessimally small(adsbygoogle = window.adsbygoogle || []).push({}); area. Wouldn't area vectors only contain a direction and not a magnitude?

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# The area vector and its magnitude

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