John Joly

John Joly

Infobox Scientist
name = John Joly
box_width =


image_size =150px
caption = John Joly
birth_date = November 1 1857
birth_place = Bracknagh, County Offaly
death_date = December 8 1933
death_place = Dublin, Ireland
residence =
citizenship =
nationality = Ireland
ethnicity =
field = geology medicine
work_institutions =
alma_mater =
doctoral_advisor =
doctoral_students =
known_for = radiotherapy cohesion-tension theory
author_abbrev_bot =
author_abbrev_zoo =
influences =
influenced =
prizes =
religion =
footnotes =

John Joly (November 1 1857 – December 8 1933) was an Irish scientist, possibly most famous for his development of radiotherapy in the treatment of cancer. He is also known for developing techniques to accurately estimate the age of a geological period, based on radioactive elements present in minerals.

Joly was born in Holywood House, Bracknagh, County Offaly, Ireland.He entered Trinity College, Dublin, to become a graduate in engineering in 1882 and later become Professor of Geology there. In his career he wrote over 270 books and scientific papers. In 1884Fact|date=July 2008 he patented the Joly color screen process of colour photography, a line-based screen-plate process.

Joly's paper "Uranium and Geology" was given as an address to the British Association for the Advancement of Science which met in Dublin in 1908. This work described radioactive materials in rocks and their part in the generation of the Earth's internal heat.

Joly, along with Henry Horatio Dixon, put forward the cohesion-tension theory. This is now thought to be the main mechanism for the upward movement of water in plants.

He died in Dublin, Ireland.

His second cousin Charles Jasper Joly became Astronomer Royal for Ireland in 1897.

A crater on Mars was named in his honor.

External links

* [http://www.europhysicsnews.com/full/08/article2/article2.html The parrot, the pince-nez and the pleochroic halo ] at www.europhysicsnews.com
* [http://www.irishmidlandsancestry.com/content/offaly/people/literature_irish.htm Contribution of Offaly Writers to Irish Literature - Ancestral Research, Family History, Laois, Offaly, Genealogy ] at www.irishmidlandsancestry.com
*


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Joly — may refer to:;people *Dom Joly (1967–), British television comedian *Édouard Joly (1898–1982), French aeroplane designer *John Joly (1857–1933), Irish scientist *Greg Joly *Eva Joly *Maurice Joly *Sébastien Joly *Rene Joly *Joly Braga… …   Wikipedia

  • Joly — ist der Familienname folgender Personen: Andrée Joly (1901–1993), französische Eiskunstläuferin Dom Joly (* 1968), britischer Schauspieler und Produzent Eva Joly (* 1943), norwegische Juristin Ferdinand Joly (1765–1823), österreichisches Dichter… …   Deutsch Wikipedia

  • Joly — This interesting and unusual surname is a contraction of Jolliffe, which derived from the Middle English or Old French jolif or joli meaning merry and lively and was originally given as a nickname to one of cheerful disposition. Perhaps the word… …   Surnames reference

  • Joly color screen — The Joly color screen process is a color photography technique devised by John Joly in 1895.Fact|date=July 2008 The plates used for the process were glass plates with fine vertical red, green and blue lines printed on them. The plate acted as a… …   Wikipedia

  • John Nicks — Voller Name John Allen Wisden Nicks Nation Vereinigtes Konigreich …   Deutsch Wikipedia

  • John Nicks — Biographie Nom complet John Allen Wisden Nicks Nationalité …   Wikipédia en Français

  • John Jones Ross — John Jones Ross, PC (* 16. August 1831 in Québec; † 4. Mai 1901 in Sainte Anne de la Pérade) war ein kanadischer Politiker und Arzt. Er war der siebte Premierminister der Provinz Québec und regierte vom 23. Januar 1884 bis z …   Deutsch Wikipedia

  • John Slaney — Données clés Nationalité  Canada Né le 7 février 1972, St. John s (Canada) Taille 1,83  …   Wikipédia en Français

  • John Adam —     John Adam     † Catholic Encyclopedia ► John Adam     A distinguished preacher and a strenuous opponent of Calvinists and Jansenists, born at Limoges in 1608; died at Bordeaux, 12 May, 1684. He entered the Society of Jesus in 1622. He wrote… …   Catholic encyclopedia

  • John-117 — Spartan John 117 Pour les articles homonymes, voir Spartan. Major Spartan John 117 Légende {{{légende}}} Série Halo …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”