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education/physics/PHYS2220/Gauss's Law.md
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# Flux # Flux
Flux refers to a flow of matter or energy. Examples include water through a pipe, blood through veins, or air over an airplane's wing. Flux refers to a flow of matter or energy. Examples include water through a pipe, blood through veins, or air over an airplane's wing.
While there's nothing directly *flowing* in an electric field, the term flux is used to describe the total strength of a field.
In the simplest case with a uniform field of magnitude $E$ perpendicular to an area $A$, the flux is described as follows:
$$ \Phi = EA$$
- $E$ refers to the amplitude
- $A$ refers to the area