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The Library Company of Philadelphia, founded by Franklin and some of his friends, became America’s first lending library. In its print archives there exists a 1764 political cartoon which depicts Franklin wearing an unusual pair of eyeglasses, interpreted by some knowledgeable people as bifocals because the upper portion of each lens appears different from the lower portion. This is the only real evidence that Franklin invented bifocals. No one knows what day it occurred on.
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Who invented bifocals?
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.
Did ben franklin invent the phone?
Yes, Ben Franklin did invent many useful things! He invented the bifocals, the stove,longarm, swimfins, lightning rods, fireplace, glass armonica! ( Please a message....... davidrox2009@live.com add me!)
Did Benjamin Franklin invent the wetsuit?
No. Ben Franklin did not invent water skies, but he did invent swim fins.
How did Benjamin Franklin invent glasses?
It's not easy to tell you when Franklin invented glasses, because they were well documented in Europe prior to 1300, i.e. 500 years before Franklin was born. Ben Franklin did invent a number of other things, including bi-focals.
Where did Benjamin Franklin invent the bifocal?
In his house in Philly because he got tiered of taking off and putting back on his glasses when he wanted to read. So he got 2 lenses and set his mind to work!
Did Ben Franklin invent bifocals?
yes he did
In what year were soft bifocal contact lenses invented?
Benjamin Franklin is generally credited with the invention of bifocals in 1784
Who invented the bifocals and the lighting rod?
Ben Franklin
Who invented bifocals?
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.
Where and when were the bifocals invented?
ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
How did ben Franklin become famous?
Ben became famous by inventing a lot of stuff. like the bifocals and Franklin stove.
Did ben franklin invent the phone?
Yes, Ben Franklin did invent many useful things! He invented the bifocals, the stove,longarm, swimfins, lightning rods, fireplace, glass armonica! ( Please a message....... davidrox2009@live.com add me!)
Who created eyeglasses for nearsighted and farsighted vision?
Ben Franklin, they are called bifocals
What were Ben Franklin's top 5 inventions?
bifocals, lightning rod, flippers,
Who invented bifocals the lending library and an efficient heating stove?
Ben Franklin.
Did Benjamin Franklin invent the wetsuit?
No. Ben Franklin did not invent water skies, but he did invent swim fins.
How did ben become famous?
Ben became famous by inventing a lot of stuff. like the bifocals and Franklin stove.
