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When a high voltage is applied to a low-pressure gas causing it to glow,it will emit which type of spectrum?
Q3: A camera lens is initially set at
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Q12: Quadrupling the f-number of a camera lens
Q19: As the temperature of a radiation emitting
Q19: An unknown particle in an accelerator moving
Q49: The Heisenberg uncertainty principle places restriction on
Q75: In the straight-ahead direction (θ = 0°)in
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Q87: Mesons are composed of _ quarks,and baryons