- Inventor of Bifocals
- Benjamin Franklin
Eponyms, nicknames, and geographical games. 2013.
Inventor of Bifocals
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Bifocals — are eyeglasses whose corrective lenses each contain regions with two distinct optical powers. Bifocals are most commonly prescribed to people with presbyopia who also require a correction for myopia, hypermetropia, and/or astigmatism.… … Wikipedia
Glasses — Glasses, also called eyeglasses or spectacles, are frames bearing lenses worn in front of the eyes, normally for vision correction, eye protection, or for protection from UV rays.Modern glasses are typically supported by pads on the bridge of the … Wikipedia
List of United States inventions — 1700s1731 Sextant * The sextant is an astronomical instrument that is used to determine latitude for navigation. It does this by measuring angular distances, like the altitude of the sun, moon and stars. The sextant was invented independently in… … Wikipedia
Benjamin Franklin — Infobox Governor name=Benjamin Franklin width=180px height=220px caption=1777 Jean Baptiste Greuze portrait of Franklin. order=6th President of the Supreme Executive Council of Pennsylvania office= term start=October 18, 1785 term end=December 1 … Wikipedia
Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… … Wikipedia
18th century — The 18th century lasted from 1701 to 1800 in the Gregorian calendar, in accordance with the Anno Domini/Common Era numbering system. However, historians sometimes specifically define the 18th century otherwise for the purposes of their work. For… … Wikipedia
List of QI episodes (A series) — infobox tvseason season name = QI Series A caption = The front cover of the QI Series A DVD, featuring Stephen Fry (right) and Alan Davies (left). dvd release date = 6 November 2006 country = UK network = BBC first aired = 11 September 2003 last… … Wikipedia
Franklin Stove — Benjamin Franklin (1706 1790) was one of America s greatest statesmen. He was a diplomat sent to France to seek aid for the colonists, and he helped frame both the Declaration of Independence and the United States Constitution. Franklin was … Dictionary of eponyms
