Jul 5, 2018

[5.9.11.5.7] A function of the solid angle (ω), given in steradians, that is subtended by a source. Solid angle factor is given by:

Q=20.4\left ( \omega \right )+ 1.52\left ( \omega \right )^{0.2}- 0.75

See: index of sensation, M.

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