ben Franklin invented his bifocals at his house in philly and made them on March 23.1784
bifocals were invented on the 300th block of Market street in Philadelphia
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.:)
The Bifocals by Benjamin Franklin in 1784.
they where invented for people who arent far sighted or near sighted so that they can see far and near
Ben Franklin was getting older and couldn't see as well he had both kinds of glasses near sighted and far sighted he cut the lens in half and then glued them together this was the 1st pair of bifocals
bifocals were invented on the 300th block of Market street in Philadelphia
Benjamin Franklin invented the 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.
Ben Franklin
he invented bifocals
in Washington DC
I've read that Benjamin Franklin invented them...
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.:)
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.
Bifocals are used for distance seeing or at close up seeing.
Benjamin Franklin.
Benjamin Franklin