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Arthur Atwater Kent Sr. (December 3, 1873 – March 4, 1949) was an American inventor and prominent radio manufacturer based in Philadelphia. In 1921, he patented the modern form of the automobile ignition coil .
Spark Museum Light Bulbs Spark Museum AC DC Exhibit. The museum began in 1985 as an informal collection of radio sets, spare parts, schematics, recordings, and vintage magazines and manuals owned by a Bellingham resident, Jonathan Winter [1] Winter's collection continued to grow, and by 1998, the Bellingham Antique Radio Museum was officially established, with the more than 800 radio sets from ...
By the 1929 model year, Philco was in third place behind Atwater Kent and Majestic (Grigsby-Grunow Corp) in radio sales. In 1930, the company sold 600,000 radios, grossed $34 million, and was the leading radio maker in the country.
Guglielmo Marconi, who built the first radio receivers, with his early spark transmitter (right) and coherer receiver (left) from the 1890s. The receiver records the Morse code on paper tape Generic block diagram of an unamplified radio receiver from the wireless telegraphy era [4] Example of transatlantic radiotelegraph message recorded on paper tape by a siphon recorder at RCA's New York ...
The Museum's collections included more than 80,000 objects related to Philadelphia and regional history, including an estimated 10,000 17th- to 20th-century artifacts transferred from the Historical Society of Pennsylvania art and artifact collection in 2009, 1700 Quaker-related items from Friends Historical Association Collection, and collections reflecting Philadelphia manufacturing, the ...
A plant in Lancaster, Pennsylvania, which RCA operated from the late 1940s to June 1986, released more than 250,000 pounds of 1,1,1-trichloroethane pollutants per year from its exhaust stacks. Tests by the United States Environmental Protection Agency (EPA) in the late 1980s and early 1990s, found the groundwater contaminated by ...
Amy Schumer’s still got it!. As the Los Angeles Lakers faced off against the New York Knicks on Saturday, Feb. 1, the actress and comedian, 43, took the crowd at Madison Square Garden by ...
The term All American Five (abbreviated AA5) is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation (AM) broadcasts in the medium wave band, and were manufactured in the United States from the mid-1930s until the early 1960s.