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Astrophysics Alevel Flashcards
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What needs to be large in a telescope in order to produce detailed image?
What needs to be large in a telescope in order to produce detailed image?
Diameter- when diameter increases the angular resolution decreases, meaning a more clear imagine will be formed.
Define focal length
Define focal length
Distance between centre of lens and principle focus.
What is chromatic aberration?
What is chromatic aberration?
Chromatic aberration is the distortion in image due to different wavelengths of light diffracted by different amounts leading to them not meeting at the same position.
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