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I've read that Benjamin Franklin invented them...
What else can I help you with?
What Chinese invention did Benjamin Franklin use?
Glasses ...He invented Bifocals .
What is the importance of bifocals?
Bifocals are important for those with impaired vision, so they can see both far and near without taking off their glasses or switching them. They were invented by Benjamin Franklin in 1700â??s.
What did Benjamin Franklin have or ivent?
Ben Franklin invented the Lighting Rod,Bifocals,Frankiln Stove,Carriage Odometer and the Glass Armonica.
Benjamin Franklin was famous but he also invented?
Bifocals, Franklin stove, Lightning Rod, Electricity, Class Harmonica, and the Odometer
What did Ben Franklin invent?
Ben Franklin invented a lot of things. one thing that he invented was the glass harmonica. he also invented the lightning rod and bifocal glasses.Also the fire dep.i do not know a$$he taught himself to swim from a book but wanted to be faster so he developed the swim fin. there is the franklin stove there was also a musical instrument with spinning glass to vibrate with your damp fingers think of a glass rim. of course dont forget the lightning rod and bi focals and the idea of ocean currents.
Who invented bioforcal glasses?
Benjamin Franklin invented the bifocals
Did president George Washington invent bifocals?
George Constant Louis Washington, not the president of the United States, is fabled to have invented bifocals. However Benjamin Franklin invented bifocals on May 23, 1785.
Where and when were the bifocals invented?
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
What state did ben invented the bifocals?
in Washington DC
What did Benjamin Franklin invent and what nationality was he?
he invented bifocals
What year was the bifocals invented?
The bifocals were invented in 1784, by Benjamin Franklin, because he had seeing problems, and put two lenses of glass together to magnify his vision.
Why were bifocals invented?
Bifocals are used for distance seeing or at close up seeing.
Where were bifocals invented?
Bifocals were invented by Benjamin Franklin in the United States around 1784. Franklin designed them to help him see both up close and far away without having to switch between different pairs of glasses.
Who invented the bifocals eyeglasses?
Benjamin Franklin.
What Chinese invention did Benjamin Franklin use?
Glasses ...He invented Bifocals .
Who invented the lighting rod and bifocals other inventions?
Benjamin Franklin
Who invented the bifocals and the lighting rod?
Benjamin Franklin is credited with inventing both the bifocals and the lightning rod. He created bifocals to address his presbyopia, a condition that causes difficulty in focusing on close objects, and he invented the lightning rod to protect buildings from lightning strikes by grounding the electrical charge.
