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    Physics A-Level

    Order of the maximum

    What Order of the maximum means in Physics A-Level, as defined for AQA, OCR.

    Definitions of Order of the maximum

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    Reference: OCR

    An integer n in d sin θ = nλ, with the zeroth-order maximum at θ = 0° and higher orders appearing symmetrically on both sides.
    OCR · Superposition (study guide)
    The value n, with n = 0 for the central maximum and n = 1, 2, 3 … for successive maxima.
    AQA · Diffraction (study guide)

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