solar absorptance (a)

Definition

ratio of the solar radiant flux absorbed by a material (or body) to that incident upon it

Notes

  • NOTE Differentiation is made between two methods: a. Spectroscopic method using a photospectrometer covering the range from 0,25 μm up to 2,5 μm for the determination of as. b. Portable equipment using a xenon flash for relative measurements (ap).
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