another time line

1861 Western Union builds the first transcontinental telegraph line.
1862 Abbe Giovanni Caselli invents the "pantelegraph," the first instrument to transmit a still image over wires.
Oliver Wendell Holmes (Sr.) and Joseph Bates create the Holmes stereo viewer, an advancement on Sir Charles Wheatstone's 1838 invention. By the turn of the century Underwood & Underwood is producing 100,000 viewers year.
1865 Basing his work on Faraday's, James Clerk Maxwell develops a theory predicting the existence of electromagnetic radiation.
Caselli's pantelegraph transmits images between Paris and Lyon.
1876 Alexander Graham Bell receives Patent Number 174,465 covering “The method of, and apparatus for, transmitting vocal or other sounds telegraphically . . . by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds.”
Emile Berliner invents a transmitter for Bell's telephone, which will increase the volume of the transmitted voice.
1877 George Carey puts forward drawings for what he called a "selenium camera" that would allow people to "see by electricity."
German physicist Eugen Goldstein coins the term "cathode rays" to describe the light emitted when an electric current is forced through a vacuum tube.
Thomas Edison patents the phonograph and establishes the Edison Speaking Phonograph Company.
Alexander Graham Bell and two investors, Gardiner C. Hubbard and Thomas Sanders, form the Bell Telephone Company, which they sell the next year to a group of financiers.
1878 Eadweard Muybridge photographs a horse in motion.
William Crookes confirmed the existence of cathode rays by building a tube to display them in.
The first telephone exchange in the United States opens in New Haven, Ct., under license from Bell Telephone.
Thomas Edison forms the Edison Electric Light Company.
1879 Edison applies for a patent for an incandescent light bulb.
1880 Muybridge's Zoopraxiscope projects photographic images in motion.
1883 George Eastman creates film in roll form, which allows multiple exposures with a single loading, and founds the Eastman Company.
1884 Paul Nipkow creates a design for sending images over wires using a rotating metal disk technology. There were no working models.
Bell Telephone's first long distance telephone line, between Boston and New York City, opens. Emile Berliner speaks at the opening ceremonies.
1885 American Bell Telephone Co. creates American Telephone & Telegraph for its long distance business.
1886 George Westinghouse incorporates the Westinghouse Electric Company, which will construct and market alternating current (ac) electrical systems.
1887 Heinrich Hertz is the first to broadcast and receive radio waves, confirming James Clerk Maxwell's calculations.
1888 Thomas Edison's phonograph is manufactured for sale to the public.
The Kodak camera goes on sale, preloaded with 100 exposures, no viewfinder or focus, and meant to be sent back to Kodak for developing and reloading.
Oberlin Smith publishes a description of magnetic recording in Electrical World; it is not known if he created a working model of his drawings.
1889 The first commercial transparent roll film, perfected by George Eastman, goes on the market.
Louis Glass and William S. Arnold place a coin-operated Edison cylinder phonograph in the Palais Royale Saloon in San Francisco, patenting it as the Nickel-in-the-Slot (U.S. 428,750).
Public telephone stations are available.
Columbia Phonograph Co. issues a one-page music record catalog.