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10 cards from this deck
Ability to distinguish between closely spaced objects
θ≈λD\theta \approx \frac{\lambda}{D}θ≈Dλ
Diameter of objective (lens or mirror)
Wavelength of electromagnetic radiation
Angular separation ≥λD\geq \frac{\lambda}{D}≥Dλ
Smaller θ\thetaθ, better resolution (finer details)
D2D^2D2 (square of objective diameter)
Quadruples it (increases by factor of 4)
1/3600 of a degree
Diffraction pattern: bright central disc + concentric rings
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