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Medical History Today
23rd May, 2020: Benjamin Franklin a Politician and Inventor.
BENJAMIN FRANKLIN circa 1785 (17th January, 1706 – 17th April, 1790)
On this day 23rd May, 1785 Benjamin Franklin announced the invention of the bifocal lens. Bifocal lens are made of two lenses; a diverging and converging lens in one spectacle used for correcting both near and far vision respectively. Franklin who is famous for…
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Medical History Today
23rd May, 2020: Benjamin Franklin a Politician and Inventor.
BENJAMIN FRANKLIN circa 1785 (17th January, 1706 – 17th April, 1790)
On this day 23rd May, 1785 Benjamin Franklin announced the invention of the bifocal lens. Bifocal lens are made of two lenses; a diverging and converging lens in one spectacle used for correcting both near and far vision respectively. Franklin who is famous for…
View On WordPress
