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A Review Of designer eyeglasses

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Refraction effects are based upon the fact that light travels much more slowly within a denser medium. The ratio with the velocity of light in air to its velocity inside the medium is called the refractive index on the medium for light of a specific colour or wavelength. The refractive https://glasses-frames65521.blog-ezine.com/29979392/eye-glass-store-near-me-an-overview

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