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I suspect all mammals do.
Easy to check (for the smart ones). I discovered this when aligning a
monochrometer illuminated by a D2 lamp. Since then I've done it a few
times with an Hg pen lamp. Beyond the violet the color is a blue tint
(low purity) and spread unfocussed over the whole field, I don't
recommend doing this for more than a few sec.. The first time; I "sun
burned" my eye -- very painful and may contribute to macular
degeneration.
Is it bees that do? -- in that case I suspect their receptors are UV
sens. -- mammals, may be, also, but the cornea, lens, aqueous, and
vitreous absorb it.
bc
Larry Smith wrote:
At 1:14 PM -0800 2/4/03, Bernard Cleyet wrote:
bc who sees UV, presumably because his cornea fluoresces.
Is this how other species see UV? How many humans can?
Larry