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Apple Keyboard + UV Light

I have a question for all material scientists & plastic experts.  I have an Apple wireless keyboard and a near-UV LED flashlight.   As one would expect, many things fluoresce:  tee shirts, white paper, etc.  What is odd, is that only some of the keys on my keyboard do this.  I would expect this to be an all-or-none type deal but specifically the F,J, arrows, Cap locks, function, alt, control and return keys glow while the others do not.  Under normal light these keys look identical and feel the same.

Why would Apple use a different material for these keys?  (My wired Apple Keyboard does the exact same thing.)  Does anyone know why there is this difference?

The unusual keys:

  • J
  • F
  • Cap Lock
  • Fn
  • Control
  • Alt / Option
  • Enter / Return
  • arrow keys

4 Comments

  1. My guess (at least as far as the F and J keys) is that in the dark, the light from your monitor might make the anchor keys glow a little bit, much like having the raised bars on the same two keys, though why they would have both is beyond me and I don’t think the light from the monitor would actually illuminate them at all. Maybe they did it for people who have black light posters and listen to lots of psychedelic rock on quadraphonic vinyl. Maybe.

    1. You’re spot on regarding the anchor keys – they do have little raised bars at the bottom of those keys. I haven’t noticed them glowing any different under normal conditions or computer light-only conditions :-/

  2. yeah I actually did this on my wired apple keyboard and the only thing on mine that lit up differently was the period key on the numberpad, which does not have a raised bar of any kind. This is very odd, why would apple bother to change the material of one key?

  3. yeah I actually did this on my wired apple keyboard and the only thing on mine that lit up differently was the period key on the numberpad, which does not have a raised bar of any kind. This is very odd, why would apple bother to change the material of one key??

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