Benjamin Franklin, Benjamin Franklin facts, Benjamin Franklin inventions, Benjamin Franklin science,

Did you Know? Benjamin Franklin invented bifocal lenses

Benjamin Franklin, Benjamin Franklin facts, Benjamin Franklin inventions, Benjamin Franklin science,

You may know Benjamin Franklin as one of the Founding Fathers of the United States of America and the man who performed the lightning rod experiment, but did you know he also invented bifocal lenses? He was both far-sighted and near-sighted, and he was sick of constantly changing his glasses. As a result, he devised the idea of combining both lenses into a single frame.

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