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Portable pa system for Dummies

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Cos ϕ. This light needs to vacation farther than the axial light to reach a display screen, then it strikes the screen at One more angle ϕ. The web consequence is that the oblique illumination about the monitor is scaled-down compared to the axial illumination from the factor cos4 ϕ. https://israelhmnss.full-design.com/the-fact-about-glasses-store-near-me-that-no-one-is-suggesting-72546257

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