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Ultrashort colour (Posted on 2006-10-06) Difficulty: 4 of 5

Recently physicists have managed to build "attosecond lasers", lasers which emit pulses 10-18 seconds long, interrupted by much longer periods of darkness (at least 10-14 seconds). Before them, lasers emitting femtosecond (10-15 seconds) pulses have been around. Assuming they produce visible light, what colour is it?

See The Solution Submitted by vswitchs    
Rating: 3.7500 (4 votes)

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Solution re: Spoiler | Comment 11 of 15 |
(In reply to Spoiler by gregg)

One correction.  The taylor approximation starts breaking down for larger n.  So, the spectrum is actually weighted towards the ultraviolet, x-ray, and gamma ray part of the spectrum.
  Posted by gregg on 2006-10-19 03:26:20

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