1904 in science

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The year 1904 in science and technology involved some significant events, listed below.

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Astronomy

Cartography

Mathematics

Medicine

Physics

Technology

Zoology

Awards

Births

Deaths

Related Research Articles

<span class="mw-page-title-main">Charles Louis Alphonse Laveran</span> French physician (1845–1922)

Charles Louis Alphonse Laveran was a French physician who won the Nobel Prize in Physiology or Medicine in 1907 for his discoveries of parasitic protozoans as causative agents of infectious diseases such as malaria and trypanosomiasis. Following his father, Louis Théodore Laveran, he took up military medicine as his profession. He obtained his medical degree from University of Strasbourg in 1867.

The year 1900 in science and technology involved some significant events, listed below.

The year 1901 in science and technology involved some significant events, listed below.

The year 1866 in science and technology involved some significant events, listed below.

The year 1908 in science and technology involved some significant events, listed below.

The year 1912 in science and technology involved some significant events, listed below.

The year 1913 in science and technology involved some significant events, listed below.

The year 1915 involved numerous significant events in science and technology, some of which are listed below.

The year 1841 in science and technology involved some significant events, listed below.

The year 1895 in science and technology involved some significant events, listed below.

The year 1856 in science and technology involved some significant events, listed below.

The year 1878 in science and technology involved many significant events, listed below.

The year 1886 in science and technology involved some significant events, listed below.

The year 1929 in science and technology involved some significant events, listed below.

The year 1963 in science and technology involved some significant events, listed below.

<span class="mw-page-title-main">Fleming valve</span> Type of vacuum tube; early radio detector

The Fleming valve, also called the Fleming oscillation valve, was a thermionic valve or vacuum tube invented in 1904 by English physicist John Ambrose Fleming as a detector for early radio receivers used in electromagnetic wireless telegraphy. It was the first practical vacuum tube and the first thermionic diode, a vacuum tube whose purpose is to conduct current in one direction and block current flowing in the opposite direction. The thermionic diode was later widely used as a rectifier — a device that converts alternating current (AC) into direct current (DC) — in the power supplies of a wide range of electronic devices, until beginning to be replaced by the selenium rectifier in the early 1930s and almost completely replaced by the semiconductor diode in the 1960s. The Fleming valve was the forerunner of all vacuum tubes, which dominated electronics for 50 years. The IEEE has described it as "one of the most important developments in the history of electronics", and it is on the List of IEEE Milestones for electrical engineering.

Lucien Bull was a pioneer in chronophotography. Chronophotography is defined as "a set of photographs of a moving object, taken for the purpose of recording and exhibiting successive phases of motion."

References

  1. Asimov, Isaac. Asimov's Biographical Encyclopedia of Science and Technology (2nd ed.).
  2. "Sur une courbe continue sans tangente, obtenue par une construction géométrique élémentaire".
  3. Addison, Paul S. (1997). Fractals and Chaos: An Illustrated Course. Bristol: Institute of Physics. p. 19. ISBN   0-7503-0400-6.
  4. Crilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus. p. 145. ISBN   978-1-84724-008-8.
  5. Zermelo, Ernst (1904). "Beweis, dass jede Menge wohlgeordnet werden kann" (reprint). Mathematische Annalen . 59 (4): 514–16. doi:10.1007/BF01445300. S2CID   124189935.
  6. Cabot, Richard C. (1904). "The relation of alcohol to arterioscleroisis". Journal of the American Medical Association . 43 (12): 774–775. doi:10.1001/jama.1904.92500120002a . Retrieved 2019-10-04.
  7. Reported by him in Pamiętnik Towarzystwa Lekarskiego Warszawskiego. Bartnik, W. (December 2003). "Inflammatory bowel disease – Polish contribution". Journal of Physiology and Pharmacology. Kraków: Polish Physiological Society. 54 (S3): 205–210. PMID   15075474 . Retrieved 2008-03-28.[ permanent dead link ]
  8. British Patent No. 16,345. Robinson, Peter (2003). Lincoln's Excavators: The Ruston years 1875–1930. Nynehead: Roundoak. ISBN   1-871565-42-1.
  9. The Hutchinson Factfinder. Helicon. 1999. ISBN   978-1-85986-343-5.
  10. Newpower, Anthony (2006). Iron Men And Tin Fish: The Race to Build a Better Torpedo During World War II. Westport, Conn.: Greenwood Publishing Group. p. 18. ISBN   0-275-99032-X.
  11. Reported by him in "Motional mechanism of the insect wing", Comptes rendus de l'Académie des sciences 138:590–592 (29 February); "Application of the electric spark to the chrono-photography of rapid motions", Comptes rendus138:155–157 (21 March); "Chronophotography of rapid motions", Bulletin de la Société Philomathiclue (Paris) (June 11); Synthesis in chronophotography, Bulletin de la Société Philomathiclue (November 12).
  12. "Rue Franklin Apartments". GreatBuildings. Retrieved 2012-05-29.
  13. Rothschild, Walter (1904-05-20). "Microgoura, n. gen". Bulletin of the British Ornithologists' Club. 14 (CVII): 77–78. Retrieved 2015-09-29.