Energy flux
Energy flux is the rate of transfer of energy through a surface. The quantity is defined in two different ways, depending on the context:
- Rate of energy transfer per unit area.[1] (SI units: W⋅m−2 = J⋅m−2⋅s−1)
- This is a vector quantity, its components being determined in terms of the normal (perpendicular) direction to the surface of measurement.
- This is sometimes called energy flux density, to distinguish it from the second definition.
- Radiative flux, heat flux, and sound energy flux are specific cases of this meaning.
- Total rate of energy transfer.[2] (SI units: W = J⋅s−1)
See also
References
- ↑ "Energy flux". Retrieved 2008-12-24.
- ↑ "Solar Physics Glossary". Nasa. Retrieved 2008-12-24.
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