Flux is the rate of flow of energy through a particular area over a specific amount of time. It is a measurement of power per unit area and can therefore be expressed as watts per square meter (). Flux is affected by the area of the surface, the orientation of the surface, and the density of the energy flow. Using vector calculus, flux (Φf) can be calculated as the surface integral of the vector field (E) multiplied by the total vector area (dA):
This is a mathematical means to determine the amount of flow through a specific area.
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In engineering there are many key concepts and terms that are crucial for students to know and understand. Often it can be hard to determine what the most important engineering concepts and terms are, and even once you’ve identified them you still need to understand what they mean. To help you learn and understand key engineering terms and concepts, we’ve identified some of the most important ones and provided detailed definitions for them, written and compiled by Chegg experts.