Irradiance of a area for each device frequency or wavelength. The phrases spectral flux density or maybe more confusingly "spectral intensity" can also be applied. Non-SI units of spectral irradiance incorporate Jansky = ten W⋅m⋅Hz and photo voltaic flux unit (1SFU = 10 W⋅m⋅Hz). term #beta Beta /beta #preferredDictionaries https://marjaneyz974ucm3.theobloggers.com/profile