State the Rayleigh criterion for a circular aperture.
Question 2
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What is an Airy pattern?
Question 3
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What does the Rayleigh criterion mean physically?
Question 4
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Find the angular resolution of a \(0.10\,\mathrm{m}\) aperture using \(550\,\mathrm{nm}\) light.
Question 5
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Find the angular resolution of a \(2.4\,\mathrm{m}\) telescope using \(500\,\mathrm{nm}\) light.
Question 6
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How does doubling the aperture diameter affect diffraction-limited angular resolution?
Question 7
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How does using a shorter wavelength affect diffraction-limited resolution?
Question 8
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A telescope has \(\theta_R=6.7\times10^{-6}\,\mathrm{rad}\). What separation is just resolved at \(2.0\,\mathrm{km}\)?
Question 9
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State the small-angle relation between angular separation and linear separation.
Question 10
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Derive the diffraction-limited linear separation for a circular aperture.
Question 11
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A camera lens has aperture diameter \(25\,\mathrm{mm}\). Estimate its diffraction-limited angle for \(550\,\mathrm{nm}\) light.
Question 12
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At \(100\,\mathrm{m}\), what separation corresponds to \(2.68\times10^{-5}\,\mathrm{rad}\)?
Question 13
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Why can increasing magnification fail to reveal more detail?
Question 14
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A microscope objective uses \(450\,\mathrm{nm}\) light instead of \(650\,\mathrm{nm}\) light with the same aperture. How does the diffraction angle change?
Question 15
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Find the aperture diameter needed for \(\theta_R=1.0\times10^{-6}\,\mathrm{rad}\) using \(500\,\mathrm{nm}\) light.
Question 16
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A \(5.0\,\mathrm{mm}\) pupil views \(550\,\mathrm{nm}\) light. Estimate the eye's diffraction-limited angular resolution.
Question 17
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What happens to the Airy disk size if the aperture diameter is reduced?
Question 18
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A system must resolve two points separated by \(1.0\,\mathrm{mm}\) at \(10\,\mathrm{m}\). What angular resolution is required?
Question 19
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Using \(\lambda=500\,\mathrm{nm}\), what aperture diameter is required for the angular resolution in question 18?
Question 20
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Why is the numerical factor \(1.22\) used for a circular aperture but not for a single slit minimum?