The CIA wants your help identifying individual terrorists in a photo of a training camp taken from a spy satellite at 130-km altitude. You ask for details of the optical system used, but they're classified. However, they do tell you that the optics are diffraction limited and can resolve facial features as small as 5 cm.
Assuming a typical optical wavelength of 550 nm, what do you conclude about the size of the mirror or lens in the satellite camera?
Distance=?
Update:This is a problem on my homework assignment by the way, not an attempt to ridicule anyone.
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Answers & Comments
Verified answer
That is not cool. The liberal media and the CIA want you to believe that it is cool. (The answer is 7 by the way.)
The CIA has really loosened up on these safety regulation since I left. Obama has castrated this institution, I doubt it even kills foreign targets anymore.
Stop ridiculing the intelligence community with your trivial physics problem, Anthony. This country has far more pressing matters.
Jeff
They have't. Electric eye has optics but no NOSS ATV and so on.