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Top latest Five opticians Urban news

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Refraction effects are according to the fact that light travels more slowly and gradually inside a denser medium. The ratio with the velocity of light in air to its velocity from the medium is known as the refractive index on the medium for light of a selected colour or wavelength. https://same-day-glasses-near-me68889.blogdeazar.com/30004086/eye-glass-store-near-me-an-overview

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