Complete the list below

PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Geometrical optics and imaging · Geometrical optics and imaging

Optics and Photonics, Ch Radiometry and photometry

Problem

Complete the list below, giving for each radiometric quantity its photometric twin, the twin's SI-derived unit, and, in the last row, which of the four rows the eye's judgement of brightness follows. The radiometric quantities are: radiant flux

\Phi

in W; radiant intensity

I_\Omega

in W sr

^{-1}

; irradiance

I

in W m

^{-2}

; radiance

L

in W m

^{-2}

^{-1}

. State which row the eye follows when judging how bright a surface looks, and why (referring to what stays constant with viewing distance).

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