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    Physics A-Level

    Collecting power and aperture area

    What Collecting power and aperture area means in Physics A-Level, as defined for AQA.

    Definition of Collecting power and aperture area

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    The collecting power of either telescope increases with the area of the dish or mirror, so a larger aperture gathers more radiation per second.
    AQA · Single dish radio telescopes, I-R, U-V and X-ray telescopes (A-level only) (study guide)

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