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may 1, 1752 - Benjamin Franklin Invention

Description:

In 1752, Benjamin Franklin made the lighting rod . He tested out a theory that he would put a handkerchief to two crossed sticks of proper length into a kite. His theory didn't work out but other people tried it and it somehow worked for them.

Added to timeline:

Date:

may 1, 1752
Now
~ 273 years ago

Images: