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Ben Franklin had poor vision and got tired of putting on his spectacles, and having to take them off again, so, he invented a way to see both near and far by taking half of a lens from two different pairs of spectacles and put each half into a single frame. He called them bifocals. The year he invented them was 1784.
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∙ 14y ago
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∙ 13y agoBen Franklin and it was in 1783 (we are doing a big project in school on who evented what and when) my teacher even said this flat out in class...
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∙ 14y agoThe person that invented the bifocal lenses is Benjamin Franklin.
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∙ 9y agoBenjamin Franklin created the bifocal lens. It is claimed that he created them in 1784 due to his having trouble with his own vision.
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∙ 14y agoin 1784 by Benjamin Franklin.
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∙ 7y ago1760s
benjamin franklin
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∙ 13y ago1784
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Who invented the bifocals?
I've read that Benjamin Franklin invented them...
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?
several things, including the lightning rod, the bifocals, and the Franklin stove. He was also known for his experiments with electricity and his discoveries in the field.
Where were bifocals invented?
bifocals were invented on the 300th block of Market street in Philadelphia
Where and when were the bifocals invented?
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
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.
Who invented the bifocals?
I've read that Benjamin Franklin invented them...
What state did ben invented the bifocals?
in Washington DC
Who invented the bifocals and the lighting rod?
Ben Franklin
What did Benjamin Franklin invent and what nationality was he?
he invented bifocals
How have bifocals changed since they were first invented?
The bifocals have changed alot since they were first invented. They have changed into different sizes, shapes and forms. They had also changed into sunglasses.:)
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.
Who invented the bifocals eyeglasses?
Benjamin Franklin.
