Irradiance of the surface for each unit frequency or wavelength. The phrases spectral flux density or even more confusingly "spectral intensity" are employed. Non-SI models of spectral irradiance involve Jansky = 10 W⋅m⋅Hz and photo voltaic flux unit (1SFU = 10 W⋅m⋅Hz). To ensure the Protected operation in the https://meherw753pzg0.homewikia.com/user