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Benjamin Franklin is generally credited with the invention of bifocals. Historians have produced some evidence to suggest that others may have come before ...

Benjamin Franklin's Inventions - USHistory.org


Bifocals are eyeglasses with an upper and lower half, the upper for distance, and the lower for reading. Bifocals are commonly prescribed to people with ...

Benjamin Franklin-Father of the Bifocal - Antique Spectacles


Adapted from the important key article by Dr. Charles Letocha, also the wonderful book by Dr. John Levene and finally the comprehensive paper (yet ...

Inventions and Achievements of Benjamin Franklin - Inventors


Benjamin Franklin invented the lightning rod - iron furnace stove - bifocal glasses and odometer - sp Ben Franklin.

In 1784, Ben Franklin developed bifocal glasses . Getting tired of switching between two types of glasses, he devised a way to have both types of lenses fit into the frame. The distance lens was placed at the top and the the up-close lens was placed at the bottom. More »
By Mary Bellis, About.com Guide

Ben Franklin Glasses - Ben Franklin Spectacles | Benjamin Franklin


Nov 6, 2013 ... bifocals benjamin franklin As Benjamin Franklin aged, his vision, which had never been great, deteriorated even further. Like many of the ...

Benjamin Franklin . Inquiring Mind . It's the Little Things | PBS


Some of his inventions, like bifocal glasses, are well-known, while others are more obscure. Of the numerous inventions Franklin created, he did not patent a ...

Bifocal Glasses History - Invention of Bifocal Glasses


Fascinating facts about the invention of Bifocals by Benjamin Franklin in 1760.

The 'inventor' of bifocals? - The College of Optometrists


US statesman Benjamin Franklin has long been credited with the invention of bifocal spectacle lenses, but whether this is historically accurate or merely a myth  ...

Top 10 Ben Franklin Inventions - HowStuffWorks


Most people in colonial Pennsylvania were content to do their reading in a simple wooden chair. Ben Franklin, on the other hand, insisted on kicking back in a ...

Popular Q&A
Q: Where Ben Franklin's bifocals are now?
A: See the film 'National Treasure' for the answer. Read More »
Source: wiki.answers.com
Q: How did ben franklins bifocals help the world?
A: it helped people see while reading and also seeing faraway objects. Read More »
Source: wiki.answers.com
Q: How did ben Franklin make bifocals.
A: He took two different pairs of glasses with different strengths and cut each lenses in half. Then he pasted the the bottom of the stronger pair to the top of th... Read More »
Source: www.answers.com
Q: Why did ben franklin create bifocals?
A: He invented them in France. While at the Dining tables he couldn't see everyone's faces, and his food at the same time. Because of the varying distances. And he... Read More »
Source: answers.yahoo.com
Q: When did Ben franklin invent bifocals?
A: Benjamin Franklin. the true answer is not 1760 it is 1784.ha ha i am smarter the this website. This answer was supplied by one of our users —. View details. Pos... Read More »
Source: www.trueknowledge.com