Irradiance of a surface area for each device frequency or wavelength. The terms spectral flux density or 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). not Substantially in amount; a https://modifiedcontainerhouse21098.sharebyblog.com/38802398/top-steel-structure-homes-secrets