Re: Human perception of infrared

[Bazpan@xxxxxxx]

Thanks very much to everybody who gently put me straight on my query as to
whether people with exceptional eyesight could possibly perceive Near
Infrared. Good of you to take the time to supply all that fascinating info.

Can I further demonstrate my ignorance with another one?

The wavelength of red light is around 750nm. I believe this equates to
 0.75mm. If you were to hold a red object such that it almost touched the
surface of the eye (say half a millimetre away) you would presumably be able
to perceive it as being red. Yet the light reflected from the object would
have travelled less than a full wavelength before striking the eye. What am I
missing here?

/Dan
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