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Homework Help: On Nyquist and sampling rate

  1. Apr 5, 2017 #1
    1. The problem statement, all variables and given/known data
    Given a detector with 500 pixels, and a pixel size of 5 um, is it posible to register next signal?

    I = cos(2 π 4 x)

    were x is expressen in um

    2. Relevant equations

    fs = fs/2

    3. The attempt at a solution

    My problem is with the pixel size, I mean, the sampling rate will be 5/500=0.01 um/px, or it should be 1/5 um-1.

    Once this drawback is solved, the solution is trivial, the Nyquist theorem is applied.

    Thanks in advance
  2. jcsd
  3. Apr 9, 2017 #2


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    Science Advisor
    2017 Award

    There is one pixel every 5µm, so the sampling rate is 1 / (5µm). If the chip size were 5µm, then you would have 0.01 µm/pixel.
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