Invention of the telephone ByBell's initial work on the harmonic telegraph had entered a formative stage, with progress made both at his new Boston "laboratory" a rented facility and at his family home in Canada a big success.
He was the seventh and last child of Samuel Ogden Edison Jr. By contrast, Samuel Jr. Once across the border, he found his way to Milan, Ohio. His patrilineal family line was Dutch by way of New Jersey; the surname had originally been "Edeson. The cause of his deafness has been attributed to a bout of scarlet fever during childhood and recurring untreated middle-ear infections.
Around the middle of his career, Edison attributed the hearing impairment to being struck on the ears by a train conductor when his chemical laboratory in a boxcar caught fire and he was thrown off the train in Smiths Creek, Michiganalong with his apparatus and chemicals.
In his later years, he modified the story to say the injury occurred when the conductor, in helping him onto a moving train, lifted him by the ears. He became a telegraph operator after he saved three-year-old Jimmie MacKenzie from being struck by a runaway train.
Jimmie's father, station agent J. MacKenzie of Mount Clemens, Michiganwas so grateful that he trained Edison as a telegraph operator.
He also studied qualitative analysis and conducted chemical experiments on the train until he left the job. These talents eventually led him to found 14 companies, including General Electricstill one of the largest publicly traded companies in the world.
Edison requested the night shift, which allowed him plenty of time to spend at his two favorite pastimes—reading and experimenting. Eventually, the latter pre-occupation cost him his job.
One night inhe was working with a lead—acid battery when he spilled sulfuric acid onto the floor. It ran between the floorboards and onto his boss's desk below.
The next morning Edison was fired.
Some of Edison's earliest inventions were related to telegraphy, including a stock ticker. His first patent was for the electric vote recorder, U. Patent 90,which was granted on June 1, Edison's major innovation was the establishment of an industrial research lab in Edison was legally attributed with most of the inventions produced there, though many employees carried out research and development under his direction.
His staff was generally told to carry out his directions in conducting research, and he drove them hard to produce results.
William Joseph Hammera consulting electrical engineer, started working for Edison and began his duties as a laboratory assistant in December He assisted in experiments on the telephone, phonograph, electric railway, iron ore separatorelectric lightingand other developing inventions.
However, Hammer worked primarily on the incandescent electric lamp and was put in charge of tests and records on that device see Hammer Historical Collection of Incandescent Electric Lamps.
Inhe was appointed chief engineer of the Edison Lamp Works. According to Edison, Hammer was "a pioneer of incandescent electric lighting".
Spraguea competent mathematician and former naval officerwas recruited by Edward H. Johnson and joined the Edison organization in Despite the common belief that Edison did not use mathematics, analysis of his notebooks reveal that he was an astute user of mathematical analysis conducted by his assistants such as Francis Robbins Upton, for example, determining the critical parameters of his electric lighting system including lamp resistance by an analysis of Ohm's LawJoule's Law and economics.
About a dozen were design patentswhich protect an ornamental design for up to a year period. As in most patents, the inventions he described were improvements over prior art. The phonograph patent, in contrast, was unprecedented as describing the first device to record and reproduce sounds.Inventions Questions including "How did satellite television originate" and "Why and how was football invented".
Early life. Alexander Bell was born in Edinburgh, Scotland, on March 3, The family home was at 16 South Charlotte Street, and has a stone inscription marking it as Alexander Graham Bell's birthplace. back to topic A descendant of the distinguished Elliot family of New England, New York born Nancy Edison was the devout and attractive daughter of a highly respected Presbyterian minister and an accomplished educator in her own right.
Who Was Thomas Edison? Thomas Alva Edison (February 11, to October 18, ) was an American inventor who is considered one of America's leading businessmen. Alexander Graham Bell, (born March 3, , Edinburgh, Scotland—died August 2, , Beinn Bhreagh, Cape Breton Island, Nova Scotia, Canada), Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone () and the refinement of the phonograph ().
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