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Radiant flux

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This is a draft article, under development. These unapproved articles are subject to a disclaimer.

Flux is a term in radiometry. It is defined as the change in energy over the change in time:


  \Phi = \frac{dQ}{dT}

In this case, the Q refers to energy from photons. The units for flux are [J/sec] which is equal to [W].

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