François Folie

François Folie (1833–1905) was a Belgian astronomer. He was the Administer at the University of Liège, director of the Institute of Astrophysics at the Cointe Observatory, and director of the Royal Observatory of Belgium.

François Folie
François Folie
Born(1833-12-11)December 11, 1833
Venlo, Belgium later The Netherlands
DiedJanuary 29, 1905(1905-01-29) (aged 71)
Belgium
Citizenship Belgium
Alma materUniversité de Liège
Spouse(s)Adelina Quinet
Children11 including the author Franz Folie (known as Franz Ansel)
Scientific career
FieldsAstronomer
InstitutionsUniversity of Liège
Observatori Reial de Bèlgica (Uccle)
Doctoral studentsMarcel Dehalu
Constantin Le Paige
InfluencesFriedrich Argelander

Early life

Folie was born on December 11, 1833 in Venlo (then in Belgium). He was the oldest of seven children. In 1930 Belgium declared itself independent from The Netherlands and there was a treaty discussion going on to determine the status of the regions.[1] The treaty placed Venlo back in The Netherlands so his father moved to Liège as he was in the military and a captain in the Belgian artillery. In Belgium, his father was put in charge to teach pyrotechnics and artillery advancements to the army.[1]

Folie went to college in Liège and on August 13, 1855 Folie earned a mathematics and physics doctorate. His father died young and Folie had to support his mother and 6 siblings.[2]

Later life and Bonn

He started to teach in 1857 at the University of Liège. While doing this he went to Bonn and started working with Friedrich Wilhelm Argelander in astronomy. He helped in a study of variable stars and with others completed a star catalog of the northern hemisphere. Also, while there, he studied thermodynamics under Rudolf Clausius. He took that training back with him to Liège and started teaching thermodynamics in 1867.[2]

On May 5, 1873 Folie married Adalina (born in 1849). Folie and Adalina had 11 children. He is the father of Franz Folie, poet, playwright and Belgian historian who wrote under the alias of Franz Ansell.[3]

Folie was the Administer at the University of Liège from 1872 to 1884, it was under his administration that most of the buildings of science and medicine were built.[1] In particular, the Cointe Observatory which held the Institute of Astrophysics. He remained director of the institute until 1893. In 1883, he succeeded Jean-Charles Houzeau as director of the Royal Observatory of Belgium.[2]

In 1885 Folie became observatory director in Brussels. Because of the increase in size of Brussels it was no longer a good city to do astronomy and he built an observatory at Uccle.[2]

He visited the Bonn observatory several times where he worked on astronomy with Friedrich Wilhelm Argelander and Adalbert Krüger.[4]

He was a correspondent of the German physicist Rudolf Clausius and taught the theory of thermodynamics.[1] He did work on the movements of a solid body (1885), in geometry (in particular with Constantin Le Paige) and on stellar reductions (Twelve tables for calculating stellar reductions 1883, Treaty of stellar reductions 1888).[2] He was a member of the Royal Academy of Science, Letters and Fine Arts of Belgium.[5]

Towards the end of his life he published a summary of all his works under the title Thirty-Five Years of Mathematical and Astronomical Work. In 1897 he retired but continued publishing until he died in Liège, Belgium on January 29, 1905.[2]

Sources
gollark: Ah, excellent.
gollark: You use *microwaves* to heat food? How quaint.
gollark: Do you have cold pockets?
gollark: Your hot pockets have been harvested to use in our thermoelectric generators.
gollark: (your agreement has been harvested to fuel our bee apifiers)

References
  1. L Godeaux (1958). Folie, (François-Jacques-Philippe), Biographie Nationale 30 (Établissements Émile Bruylant. Brussels. pp. 382–384.
  2. "François-Jacques-Philippe Folie biography". Archived from the original on 2016-04-01. Retrieved 2019-02-17.
  3. "Franz Ansel". Académie royale de langue et de littérature françaises de Belgique. Archived from the original on 2010-02-01. Retrieved 2019-02-17.
  4. L. Houziaux, L'astronomie et l'astrophysique dans Apports de Liège au progrès des sciences et des techniques, Ed. Eugène Wahle, 1981, ISBN 2-87011-090-1
  5. "Notice sur François Folie" (PDF). Académie royale des sciences, des lettres et des beaux-arts de Belgique.be. Archived (PDF) from the original on 2017-04-03. Retrieved 2019-02-17.
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