Tony Grist (poliphilo) wrote,
Tony Grist

Off The Visible Spectrum

Male and female blue tits look just the same to us but not to one another. That's because they can see colours we can't- and male blue tits carry brighter patches of ultra-violet.

(I got this info from Chris Packham's excellent TV show World's Weirdest Events.)

Ultra Violet is a real colour- or range of colours.  The same goes for Infra Red. But I can't see them. I can't even imagine them. I find that very hard to get my head around.
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