Lodge, Sir Oliver Joseph

▪ British physicist
born June 12, 1851, Penkhull, Staffordshire, Eng.
died Aug. 22, 1940, Lake, near Salisbury, Wiltshire
 British physicist who perfected the coherer, a radio-wave detector and the heart of the early radiotelegraph receiver.

      Lodge became assistant professor of applied mathematics at University College, London, in 1879 and was appointed to the chair of physics at University College, Liverpool, in 1881. During his tenure in Liverpool, he conducted experiments in the propagation and reception of electromagnetic waves. In 1890 a French physicist, Édouard Branly, showed that loose iron filings in a glass tube coalesce, or “cohere,” under the influence of radiated electric waves. To this basic design Lodge added a “trembler,” a device that shook the filings loose between waves. Connected to a receiving circuit, this improved coherer detected Morse code signals transmitted by radio wave and enabled them to be transcribed on paper by an inker. Lodge's device, first demonstrated before the Royal Institute in 1894, quickly became the standard detector in early wireless telegraph receivers. It was outmoded the following decade by magnetic, electrolytic, and crystal detectors. Lodge also obtained patents in 1897 for the use of inductors and capacitors to adjust the frequency of wireless transmitters and receivers.

      In 1900 Lodge was chosen the first principal of the new Birmingham University, and he was knighted in 1902. After 1900 he became prominent in psychical research, believing strongly in the possibility of communicating with the dead.

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Universalium. 2010.

Look at other dictionaries:

  • Lodge, Sir Oliver Joseph — SUBJECT AREA: Electronics and information technology, Telecommunications [br] b. 12 June 1851 Penkhull, Staffordshire, England d. 22 August 1940 Lake, near Salisbury, Wiltshire, England [br] English physicist who perfected Branly s coherer; said… …   Biographical history of technology

  • Lodge , Sir Oliver Joseph — (1851–1940) British physicist Born at Penkhull in England, Lodge entered his father s business in 1865. However, at the age of 22 he resumed a formal education, studying at the Royal College of Science (now part of Imperial College) and at… …   Scientists

  • Lodge, Sir Oliver Joseph —    F.R.S., LL.D. (b. 1851)    Scientist and psychologist. Elementary Mechanics (1881), Modern Views of Electricity (1888, 1892, 1907), Signalling through Space without Wires (1894), Life and Matter: A Short Treatise on Fundamental Problems (1905) …   Short biographical dictionary of English literature

  • Sir Oliver Joseph Lodge — noun English physicist who studied electromagnetic radiation and was a pioneer of radiotelegraphy (1851 1940) • Syn: ↑Lodge, ↑Sir Oliver Lodge • Instance Hypernyms: ↑physicist …   Useful english dictionary

  • Oliver Joseph Lodge — Sir Oliver Joseph Lodge (* 12. Juni 1851 in Penkhull bei Stoke on Trent; † 22. August 1940) war ein englischer Physiker. Seine größten Leistungen liegen in der praktischen Anwendung der Physik er war ein Pionier des Radios und konstruierte… …   Deutsch Wikipedia

  • Oliver Joseph Lodge — Oliver Joseph Lodge. Sir Oliver Joseph Lodge (12 de junio de 1851 22 de agosto de 1940), nació en Penkhull cerca de Stoke on Trent, fue un físico y escritor inglés, envuelto en el desarrollo de la telegrafía sin hilos. Fue la primera persona en… …   Wikipedia Español

  • Sir Oliver Lodge — noun English physicist who studied electromagnetic radiation and was a pioneer of radiotelegraphy (1851 1940) • Syn: ↑Lodge, ↑Sir Oliver Joseph Lodge • Instance Hypernyms: ↑physicist …   Useful english dictionary

  • Oliver Joseph Lodge — Sir Oliver Joseph Lodge (12 de junio de 1851 22 de agosto de 1940), nació en Penkhull cerca de Stoke on Trent, fue un físico y escritor envuelto en el desarrollo de la telegrafía sin hilos. Fue la primera persona en transmitir una señal de radio… …   Enciclopedia Universal

  • Oliver Joseph Lodge — Infobox Celebrity name = Sir Oliver Joseph Lodge caption = Vanity Fair cartoon . birth date = birth date|1851|6|12|mf=y birth place = Penkhull, Staffordshire occupation = Physicist and inventor prizes = Rumford Medal of the Royal Society in 1898… …   Wikipedia

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