by O.F.E.
Speak to LENSES
Significantly back again in the history of mankind, in 1508, Leonardo da Vinci described and drew the sketch to specific his thought of a make contact with lens. But it was in 1827 that Sir John Hershel, an English astronomer astounded the entire world with his thought of making a mould of a human eye so that a lens could be created to in shape flawlessly. Sixty several years afterwards in 1887. F.A. Muller, a German glassblower utilized these
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