Irradiance of a floor for every unit frequency or wavelength. The phrases spectral flux density or even more confusingly "spectral intensity" also are used. Non-SI units of spectral irradiance include things like Jansky = ten W⋅m⋅Hz and solar flux unit (1SFU = 10 W⋅m⋅Hz). term #beta Beta /beta #preferredDictionaries https://ashleighu853rzi1.mappywiki.com/user