1761, while he was in London.
Lightning rod, Franklin stove, bifocals, glass harmonica
he invented it in 1778
Franklin invented a glass harmonica..
lightning rod, glass harmonica, Franklin stove, bifocal glasses, and flexible urinary catheter
There are many inventions by Benjamin Franklin. These inventions include bifocal glasses, lightning rod, glass harmonica, and a flexible urinary catheter.
Benjamin Franklin was president from 1785 to 1788. Benjamin Franklin invented the lightning rod, bifocals, the Franklin stove, a catheter, and a glass harmonica.
The glass armonica (also known as the glass harmonica) was invented by Benjamin Franklin in 1761. See www.GlassArmonica.com
Lightning rod, Franklin stove, bifocals, glass harmonica
Lightning rod and glass harmonica
he invented it in 1778
The harmonica ----- Benjamin Franklin invented an instrument called the glass harmonica, which is rarely seen today and is not related to the harmonica we commonly see and hear played. Franklin's harmonica was based on earlier designs consisting of sets of glasses, partly filled with water, that were rubbed with a wet finger. It consisted of a series of crystal glass hemispheres, mounted on a shaft that went through their centers. When the shaft was turned, the hemispheres rotated, and a wet finger applied to make them sound. Unlike the glasses, which were tuned by filling with varying amounts of water, the harmonica hemispheres were tuned at the time they were made, according to their size. There is a link below to the section on Franklin's instrument in an article on the glass harmonica.
Franklin invented a glass harmonica..
lightning rod, glass harmonica, Franklin stove, bifocal glasses, and flexible urinary catheter
There is some debate as to what Benjamin Franklin's favorite invention was. However, some believe that he favored his glass harmonica.
It is one of the 39 clues: it says he did, witch is correct! This is one of the persons mentioned in Mozart's world: Benjamin Franklin (1706 - 1790) Actually Mozart did meet Ben Franklin in Paris, and was quite impressed by the Glass Harmonica which Dr. Franklin had invented. Mozart composed several pieces of music for it, including the Adagio for Glass Harmonica in C Major, K356.
Benjamin Franklin had a number of inventions, but never patented a single invention. Some of the more memorable Franklin inventions are the bifocal glasses, the Franklin stove, lightening rod, long arm reaching device, glass harmonica, political cartooning, odometer, swim fins, and urinary catheter.
There are many inventions by Benjamin Franklin. These inventions include bifocal glasses, lightning rod, glass harmonica, and a flexible urinary catheter.