Irradiance of a floor for every device frequency or wavelength. The phrases spectral flux density or more confusingly "spectral intensity" also are used. Non-SI units of spectral irradiance incorporate Jansky = ten W⋅m⋅Hz and photo voltaic flux device (1SFU = 10 W⋅m⋅Hz). Most of us needed slightly light relief https://jamesd075ubj1.jasperwiki.com/user