Jan Ingenhousz

Jan Ingenhousz FRS (8 December 1730 – 7 September 1799) was a Dutch-British physiologist, biologist and chemist.

Jan Ingenhousz
Born8 December 1730
Died7 September 1799 (aged 68)
Calne, Wiltshire, Great Britain
NationalityDutch
Alma materCatholic University of Leuven
Known forPhotosynthesis
Scientific career
FieldsPhysiology

He is best known for discovering photosynthesis by showing that light is essential to the process by which green plants absorb carbon dioxide and release oxygen. He also discovered that plants, like animals, have cellular respiration. In his lifetime he was known for successfully inoculating the members of the Habsburg family in Vienna against smallpox in 1768 and subsequently being the private counsellor and personal physician to the Austrian Empress Maria Theresa.

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