The flux received from a source is the power of its radiation crossing a unit area held perpendicular to its direction, in watts per square metre; restricted to a band of wavelengths, it is the flux in that band. The luminosity of the source is the total power it radiates, in watts.
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Earth and Space Sciences · 术语表
什么是 Flux, luminosity?
又称: flux (of a source) · luminosity