Irradiance of the surface area per device frequency or wavelength. The terms spectral flux density or maybe more confusingly "spectral intensity" are also made use of. Non-SI units of spectral irradiance include Jansky = ten W⋅m⋅Hz and photo voltaic flux unit (1SFU = 10 W⋅m⋅Hz). The Dean of Units https://prefab-office-building10987.ja-blog.com/39259952/prefab-house-secrets