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Mr. Ellis Hintz

Feb 20, 2025

Two light bulbs are 1.5 m apart. From what distance can these light bulbs be marginally resolved by

Two light bulbs are 1.5 m apart.From what distance can these light bulbs be marginally resolved by a small telescope with a 4.0 cm-diameter objective lens? Assume that the lens is limited only by diffraction and (lambda = 600 nm).
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Bernhard White

Feb 20, 2025

θ = 38.5 deg. λ = 600×10^-9 mRaleighs’ criteria for angular resolution of a circular aperature of diameter,D>>λ, is:(dθ) = 1.22λ/D = 1.22*600×10^-9/0.04 = 18×10^-6 (dθ) = d/L, L = 1.5/18×10^-6 = 83×10^3 m = 83 km... Show More
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