Messages

Subject:
Maybe . . .
Response To:
I wonder... ()

CJ in MPLS
In order to return light from an object of a particular wavelength, that particular wavelength needs to be available from the source. While fluorescent light might be more diffuse, it is more likely that the effect that you observed is due to the fact that those bulbs emit a spectrum that is complementary with the materials being illuminated. In other words, there is red light for rubies, blue light for sapphires, etc. LED's can be a bit more limited in their spectrum. Not saying this is always the case, but often it is.

Fluorescence in the objects being illuminated could always produce some light of different wavelengths, but it is unlikely to be significant. The excitation light is usually in the UV range and I suspect that fluorescent bulbs don't emit that much UV. I've never had a sunburn in my office, for example.

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