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Telharmonium console by Thaddeus Cahill 1897. The Telharmonium (also known as the Dynamophone [1]) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. [2] [3] [4] The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. [5]
Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent american inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium.
Immediate source: The ‘Telharmonium’ or ‘Dynamophone’ Thaddeus Cahill, USA 1897. 120 Years of Electronic Music (120years.net). Date: 1907 (original file) Source: This file was derived from: Telharmonium - Scientific American 1907.png: Author: Telharmonium - Scientific American 1907.png: Unknown author; derivative work: Clusternote
1896 : Edwin S. Votey completes the first Pianola; 1898 : Valdemar Poulsen patents the Telegraphone; 1906 : Thaddeus Cahill introduces the Telharmonium to the public; 1906 : Lee De Forest invented the Triode, the first vacuum tube; 1910 : Utah Mormon and Nathaniel Baldwin construct the first set of headphones from an operator's headband and ...
Georges Marcel Charles Jenny (29 April 1913 – 23 September 1975) [1] was a French musician, poet, and electronic instrument builder. His best-known invention was an electronic keyboard instrument called the Ondioline (sometimes referred to as the Jenny Ondioline). [2]
The Thing, also known as the Great Seal bug, was one of the first covert listening devices (or "bugs") to use passive techniques to transmit an audio signal. It was concealed inside a gift given by the Soviet Union to W. Averell Harriman , the United States Ambassador to the Soviet Union , on August 4, 1945.
First Solar stock jumps on earnings beat, strong demand ... The company expects revenue this year to come in between $4.4 billion and $4.6 billion versus analysts' expectations of $4.53 billion.
The first stock price ticker system using a telegraphic printer was invented by Edward A. Calahan in 1863; he unveiled his device in New York City on November 15, 1867. [ 6 ] [ 7 ] [ 8 ] Early versions of stock tickers provided the first mechanical means of conveying stock prices ("quotes"), over a long distance via telegraph wiring.