Irradiance of the area per unit frequency or wavelength. The conditions spectral flux density or maybe more confusingly "spectral intensity" will also be made use of. Non-SI units of spectral irradiance contain Jansky = 10 W⋅m⋅Hz and photo voltaic flux device (1SFU = ten W⋅m⋅Hz). not much in quantity; https://prefabtinyhomes44321.smblogsites.com/39025082/light-steel-villa-for-dummies