Edward Bennett (born October 26, 1876 in Pittsburgh, Pennsylvania) [1] was an American physicist, known from his early involvements in wireless transmission.
He obtained a Ph.D. in electrical engineering at the University of Pittsburgh (then known as the Western University of Pennsylvania) in 1897. [2] [3] The work was on spark-gap transmitters, jointly with William Bradshaw and supervised by Reginald Fessenden. Working at the University of Wisconsin–Madison, he achieved fame in the history of broadcasting from his work with Dr. Earle M. Terry that led to the first transmissions of the WHA (AM) radio station (1914). He later headed the electrical engineering department.
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after the commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use.
Guglielmo Giovanni Maria Marconi, 1st Marquis of Marconi was an Italian inventor, electrical engineer, physicist, and politician, known for his creation of a practical radio wave–based wireless telegraph system. This led to Marconi being credited as the inventor of radio, and winning the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy". His work laid the foundation for the development of radio, television, and all modern wireless communication systems.
Nikola Tesla was a Serbian-American engineer, futurist, and inventor. He is known for his contributions to the design of the modern alternating current (AC) electricity supply system.
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting.
Wireless telegraphy or radiotelegraphy is transmission of text messages by radio waves, analogous to electrical telegraphy using cables. Before about 1910, the term wireless telegraphy was also used for other experimental technologies for transmitting telegraph signals without wires. In radiotelegraphy, information is transmitted by pulses of radio waves of two different lengths called "dots" and "dashes", which spell out text messages, usually in Morse code. In a manual system, the sending operator taps on a switch called a telegraph key which turns the transmitter on and off, producing the pulses of radio waves. At the receiver the pulses are audible in the receiver's speaker as beeps, which are translated back to text by an operator who knows Morse code.
Reginald Aubrey Fessenden was a Canadian-born American inventor who received hundreds of patents in various fields, most notably ones related to radio and sonar.
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave transmissions, but also on the longwave and shortwave radio bands.
Arthur Edwin Kennelly was an Indian-American electrical engineer.
Hidetsugu Yagi was a Japanese electrical engineer from Osaka, Japan. When working at Tohoku Imperial University, he wrote several articles that introduced a new antenna designed by his assistant Shintaro Uda to the English-speaking world.
David Edward Hughes, was a British-American inventor, practical experimenter, and professor of music known for his work on the printing telegraph and the microphone. He is generally considered to have been born in London but his family moved around that time so he may have been born in Corwen, Wales.
Charles Zeller Klauder was an American architect best known for his work on university buildings and campus designs, especially his Cathedral of Learning at the University of Pittsburgh, the first educational skyscraper.
The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Institute of Electrical and Electronics Engineers (IEEE).
Robert Wendell Lucky was an American electrical engineer, inventor, and research manager at Bell Labs and Bell Communications Research (Bellcore). He is best known for his writings and speeches about technology, society, and engineering culture. Bob is a Fellow of the IEEE and a member of the National Academy of Engineering. He is also a member of TTI/Vanguard's advisory board.
Frank Conrad was an American electrical engineer, best known for radio development, including his work as a pioneer broadcaster. He worked for the Westinghouse Electrical and Manufacturing Company in East Pittsburgh, Pennsylvania, for half a century. His experimental radio station provided the inspiration, and he acted in an advisory role, for the establishment of Westinghouse's first broadcasting service, over radio station KDKA.
John Stone Stone was an American mathematician, physicist and inventor. He initially worked in telephone research, followed by influential work developing early radio technology, where he was especially known for improvements in tuning. Despite his often advanced designs, the Stone Telegraph and Telephone Company failed in 1908, and he spent the remainder of his career as an engineering consultant.
Edward Lawry Norton was an accomplished engineer and scientist. He worked at Bell Labs and is known for Norton's theorem.
The invention of radio communication was preceded by many decades of establishing theoretical underpinnings, discovery and experimental investigation of radio waves, and engineering and technical developments related to their transmission and detection. These developments allowed Guglielmo Marconi to turn radio waves into a wireless communication system.
John Renshaw Carson was an American transmission theorist for early communications systems. He invented single-sideband modulation and developed the Carson bandwidth rule for estimating frequency modulation (FM) bandwidth. In 2013 Carson was inducted into the Electronic Design Hall of Fame for his contributions to communications.
Ronold Wyeth Percival King was an American applied physicist and electrical engineer, known for his contributions to the theory and application of microwave antennas. He published twelve books and over three hundred articles in his area, as well as mentoring one hundred doctoral dissertations.
Lloyd Espenschied was an American electrical engineer who invented the modern coaxial cable with Herman Andrew Affel.