Technological revolution in American history in the field of transportation, communication and entertainment 1865-1929 (S.F)
By forbes_sasha
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The first telephone 1876
Alexander G. Bell's patent of the telephone was one of almost 700,000 U.S. patents issued between 1850 and 1900. Although the patent was only six pages long, including two pages of illustration, it proved to be one of the most contested and profitable. of the nineteenth century.
(image; credit U.S. National Archives and records Administartion, Corbetts, U.S. History) -
Invention of the phonograph
In 1887 Thomas Alva Edison found a way to record sound on two sheets of tin foiled coated cylinders resulting in the creation of the phonograph. This machine was responsible for recording and playing back sounds. Photo credit; Original Edison Tin foil Phonograph. Photo courtesy of U.S. Department of the Interior, National Park Service, Edison National Historic Site. -
The electric trolley 1890
The electric trolley replaces horse drawn mass transit. Frank Sprague is credited with improving the electric trolley concept, having developed the world's first successful electric street railway system in Richmond, Virginia. -
Invention of the first car (Model T Ford)
The Model T car was the first car mass produced on an assembly line in the United States.
(Image; In this image from a 1928 Literary Digest interview with Henry Ford on an assembly line produce new models of Ford automobiles, Corbetts, U.S. History) -
The first superheterodyne radio
In 1918 Major Edwin Armstrong developed the super heterodyne receiver to correct the problems of the TRF radio. It mixes an incoming signal with a locally generated RF signal to produce an intermediate frequency (IF). That IF is then amplified, detected and turned into sound. -
The television
A significant invention in the world of entertainment was the invention of the first electronic television by Philo Fransworth in 1929 .
