Where such a flame would be near invisible except for a visible violet glow or hue and anything else that has florescence properties would glow when the light of the flame contacts it the same as if a black light were used.
The sulfur or carbon disulfide flame is shinning in
short wavelength spectrum reportedly.
rpenner
9th March 2007 - 08:51 PM
For chemical emission reasons, yes, it might be possible.
To the human eye, however, the black body spectrum never gets bluer than a bluish-white color. Even when significant UV is present (an oxy-acetylene torch?). This is due more to the way the eye works than a physical effect.