[DOC] [TLE] IMA Hero: Ben Franklin HH [PAR] Benjamin Franklin was a hero -- read about his life, the times in which he lived, 
and... ... He was a writer, printer, newsman, publisher, editor, civic leader, 
inventor, ... one or the other of these problems so Ben had to carry two pairs of 
glasses. Ben got tired of always having to switch glasses, and he decided to put 
two lens... [DOC] [TLE] Ben Inventions-2.pdf - FarrensFourth11-12 [PAR] A pair of eye glasses only corrected one or the other of these problems so Ben 
had to carry two pairs of glasses. Ben got tired of always having to switch glasses
... [DOC] [TLE] Benjamin Franklin-Father of the Bifocal [PAR] It presented Benjamin Franklin as the inventor of bifocals. ... I therefore had 
formerly two pairs of spectacles, which I shifted occasionally, as in ... around and 
bringing the seam between the two half glasses in the way of the eye. ... In both 
these instances however it was possibly for trial lenses and not for use as 
eyeglasses. [DOC] [TLE] Benjamin Franklin FAQ | The Franklin Institute [PAR] Benjamin Franklin was born on Sunday, January 17, 1706, in Boston, ... William, 
born around 1730, was his illegitimate son with an unknown woman. ... Benjamin 
Franklin's long list of inventions includes bifocals, the lightning rod, the glass ... 
He loved to read and grew tired of switching between two pairs of glassesone... [DOC] [TLE] Inventions of Benjamin Franklin  Inventions and Inventors [PAR] Benjamin Franklin was among the most talented and multifaceted ... At around 
the age of 17, he parted ways with the print shop owner with whom ... He left 
Boston, penniless and reached Philadelphia, hungry and tired. .... This 
necessitated him to have two pairs of glasses  one for reading and one for 
seeing farther away. [DOC] [TLE] Eighteenth Century Inventors and Inventions: EnchantedLearning.com [PAR] Benjamin Franklin invented bifocal glasses in the 1700s. ... Tired of switching 
between two pairs of glasses, Franklin cut the lenses of .... These arcs were used 
on a few streets, in a few large office buildings, and even some stores. ... The first 
upright piano was made around 1780 by Johann Schmidt of Salzburg, Austria. [DOC] [TLE] A Boat Against the Current: This Day in Scientific History (Franklin ... [PAR] Jun 10, 2012 ... That Franklin electrified him with his rod  and thenceforward these two ... (At 46, 
Ben was in little condition to carry out the experiment himself; ... then invented a 
life-saving lightning rod, Franklin was sometimes ... He developed bifocals 
because he tired of carrying two pairs of glasses around all the time. [DOC] [TLE] Mega Essays - Bifocals [PAR] Rather than switching back and forth between two pairs of glasses, he cut his 
lenses crosswise ... His inventions included the Franklin stove and bifocal 
spectacles, and his ... Before Ben had bifocals, he had to carry around two pairs 
ofglasses. ... sheet through bifocals, on an extra-large screen designed torest his 
tired eyes. [DOC] [TLE] Bifocal Types: Progressive vs. Traditional  How to Decide ... [PAR] Mar 1, 2015 ... Franklin and his contemporaries were tired of carrying around multiple pairs of ... 
but neglected to address two problems: first, as presbyopia progresses, ... 
Trifocals were invented to help this issue, but actually exacerbated the second 
problem. ... These cost about the same as Standard Progressive Lenses. [DOC] [TLE] What are Occupational Bifocal and Trifocals? Do you need them? [PAR] Glasses with these lenses are special-purpose eyewear and are not ... Tired of 
wearing glasses or contact lenses? ... PRK promised to reduce or eliminate many 
of the complications of RK, including fluctuating vision, glare, halos around lights, 
..... Prior to Franklin's invention, anyone with presbyopia had to carry two pairs of
... [DOC] [TLE] Pumpkins and Politics in Pennsylvania: Tour Philadelphia With a ... [PAR] 2 days ago ... Take a tour of the founding fathers' stomping grounds with a Ben Franklin 
Impersonator in Philadelphia. [DOC] [TLE] K-Mars Optical | Monthly

Question: Tired of carrying 2 pairs of glasses around, Benjamin Franklin invented these
Answer: Bifocals