This places white light not of a composite of a spectrum of colors but photon capable of being compressed over a wide spread of work done.
\(h.f_d=\psi_w+x.F\)
where \(\psi_w\) is white light of low value, \(h.f_d\) is the spectrum of colored lights. And \(x.F\) spreads \(\psi_w\) over the rainbow.
Which suggests that the energy terms in the dispersion of white light do not add up.
\(E_w\ne E_r+E_o+E_y+E_g+E_b+...+E_v\)
In fact,
\(E_w\lt E_r+E_o+E_y+E_g+E_b+...+E_v\)
The rainbow don't add up... but still very nice. Have a nice day.