Irradiance of a area for every device frequency or wavelength. The phrases spectral flux density or maybe more confusingly "spectral intensity" are applied. Non-SI models of spectral irradiance involve Jansky = 10 W⋅m⋅Hz and solar flux unit (1SFU = ten W⋅m⋅Hz). All those specialized bulbs led into the building https://charlest641nvd9.wikigdia.com/user