Benjamin Franklin and

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• Benjamin Franklin and
• Bifocals

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Benjamin Franklin
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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

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Pictures of Bifocals

Benjamin Franklin invented bifocals between the
years of 1753-1755.
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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.
• Franklins 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.

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A Few of Benjamin Franklins Other Inventions

• Catheter
• Franklin Stove
• Glass Armonica
• Lightning Rod
• Odometer