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The first sentence in the wikipedia article says: "A blacklight [...] emits long-wave (UV-A) ultraviolet light [...]." Why does it say "long-wave" when UV is
by Bendingo 8y ago
The first sentence in the wikipedia article says:
"A blacklight [...] emits long-wave (UV-A) ultraviolet light [...]."
Why does it say "long-wave" when UV is short-wavelength ?
- OscarCunningham 8y agoBecause the light that blacklights emit is on the longer end of the possible UV wavelengths. This is what the UV-A means. There are also UV-B and UV-C with shorter wavelengths.