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Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to ... Benjamin Franklin is generally credited with the invention of bifocals. Historians have produced som...

Benjamin Franklin's contributions to science - USHistory.org


Benjamin Franklin's inventions, innovations and discoveries including the kite experiment, Franklin stove, bifocals, armonica and more.

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 ...

Bifocals and Trifocals for Vision After Age 40 - AllAboutVision.com


Dr. Gary Heiting describes which type of bifocal and trifocal eyeglass lenses best fit your vision ... Bifocal inventor Benjamin Franklin reading a manuscript. Later ...

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  ...

Ben Franklin and the Bifocal | Medgadget


Jul 22, 2005 ... When you think of medgadgets, maybe eyeglasses don't spring to mind -- probably because they've been around so long, and are so prevalent ...

When did Benjamin Franklin invent bifocals? | Reference.com


Benjamin Franklin invented bifocals in 1784. As announced in a letter to a friend, he called the new invention "double spectacles." The glasses allowed a person ...

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 ...

Benjamin Franklin and Bifocal Glasses - Benjamin Franklin House

www.benjaminfranklinhouse.org/site/sections/about_franklin/Issue 6 Bifocal glasses.pdf

I was recently invited as a trustee of Benjamin Franklin House to the council dinner of ... many books on Ben Franklin state he invented bifocal spectacles.

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Benjamin Franklin-Father of the Bifocal


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

About Benjamin Franklin: Inventor of the Bifocal Glasses


To learn more about the remarkable life of Benjamin Franklin, we have collected a variety of resources about his life and accomplishments!

Inventions and Achievements of Benjamin Franklin - Inventors


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