Originally Posted by Socratic Monologue
Looking at spectral curves of various light sources can be interesting and informative. The closer those output curves match the spectral response curves of the plant you're trying to grow, the more of the provided light will be useful to that plant.
I thought this was an intriguing comment. Am I correctly understanding that you're saying, in effect, that the quality of the light reflected from a plant can be used as an insight into how useful that light is?