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3000bc. First laws of reflection were found in his work
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13th century
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Bifocals. Invented by Benjamin Franklin (1706-1790)
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eye galsses made to cue nearsightedness, and farsightedness. after 13th century, eye glasses were built with either convex or concave lens styles
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at the end of the 16 century the micro scope was invented in the Netherlands.
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