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Benjamin Franklin and
Bifocals
Benjamin Franklin
The Inventor: Benjamin Franklin
• 1706 - Born in Boston, Massachusetts on January 17, 1706
• 1728 - Opened his own Printing Office in Philadelphia.
• 1752 - Kite experiment• 1753-1755 - Invented bifocals• 1790 - Died in Philadelphia, Pennsylvania
Pictures of Bifocals
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Benjamin Franklin invented bifocals between the years of 1753-1755.
History and Importance of Bifocals
Benjamin Franklin wore glasses, and after the age of 40 he needed another pair for reading. In order to solve his problem, he split the lenses of each pair of his glasses. He looked through the top half for distances and the bottom half for reading. This was the invention of the bifocal glasses.
Franklin’s invention made life easier for people. They would no longer have to constantly change their glasses to see things in the distance and for reading.
A Few of Benjamin Franklin’s Other Inventions
Catheter
Franklin Stove
Glass Armonica
Lightning Rod
Odometer