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Each time a properly-corrected lens is employed in place of a pinhole, the geometrical ray divergence is removed because of the focussing action from the lens, and a much larger aperture could be used; in that circumstance the diffraction spreading gets to be small in truth. The graphic of some https://same-day-glasses-near-me64073.oblogation.com/29435129/how-much-you-need-to-expect-you-ll-pay-for-a-good-wonderboom

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