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They do it with mirrors (Posted on 2006-04-26) Difficulty: 3 of 5
If I stand in front of a mirror, the light takes a finite, albeit small, amount of time to reach my eye.

So I am seeing myself as I looked some small fraction of time in the past.

Now if I stand with a second mirror behind me, I can see an infinite number of images of myself, each slightly older.

If I had my arm raised, and then I lowered it, can I still see an image of myself with raised arm?

No Solution Yet Submitted by goFish    
Rating: 3.7500 (4 votes)

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The Mirrors | Comment 5 of 8 |
I'm thinking that those tiny fractions of delay, given enought mirrors, would eventually add up to enough of a delay to be seen, however this would require super-human infinite vision.
  Posted by Gina Ernyey on 2006-05-26 13:26:19
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