1774 in science
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The year 1774 in science and technology involved some significant events.
Astronomy
- Johann Elert Bode discovers the galaxy Messier 81.
- Lagrange publishes a paper on the motion of the nodes of a planet's orbit.
Biology
- Italian physicist Abbé Bonaventura Corti publishes Osservazioni microscopiche sulla tremella e sulla circulazione del fluido in una pianta acquajuola in Lucca, including his discovery of cyclosis in plant cells.{{cite book|first=Arthur|last=Hughes|title=A History of Cytology|url=https://archive.org/details/historyofcytolog00hugh|url-access=registration|location=London|publisher=Abelard-Schuman|year=1959|page=[https://archive.org/details/historyofcytolog00hugh/page/41 41]}}
- French physician Antoine Parmentier publishes Examen chymique des pommes de terres in Paris, analysing the nutritional value of the potato.
Chemistry
- August 1 – Joseph Priestley, working at Bowood House, Wiltshire, England, isolates oxygen in the form of a gas, which he calls "dephlogisticated air".{{cite journal|last=Priestley|first=Joseph|jstor=106209|title=An Account of Further Discoveries in Air|journal=Philosophical Transactions of the Royal Society|volume=65|year=1775|pages=384–94|doi=10.1098/rstl.1775.0039|doi-access=}}
- Antoine Lavoisier publishes his first book, a literature review on the composition of air, Opuscules physiques et chimiques.
- Carl Wilhelm Scheele discovers "dephlogisticated muriatic acid" (chlorine), manganese and barium.
Exploration
- Second voyage of James Cook
- June 16/17 – English explorer Captain Cook becomes the first European to sight (and name) Palmerston Island in the Pacific Ocean.
- September 4 – Cook becomes the first European to sight (and name) the island of New Caledonia in Melanesia.
- October 10 – Cook becomes the first European to sight (and name) Norfolk Island in the Pacific Ocean, uninhabited at this date.
Mathematics
- P.-S. Laplace publishes Mémoire sur la probabilité des causes par les événements, including a restatement of Bayes' theorem.{{cite book|title=The Theory That Would Not Die|url=https://archive.org/details/theorythatwouldn0000mcgr|url-access=registration|first=Sharon Bertsch|last=McGrayne|location=New Haven|publisher=Yale University Press|year=2011|isbn=978-0-300-16969-0}}
Medicine and physiology
- William Hunter's Anatomia uteri humani gravidi tabulis illustrata | The Anatomy of the Human Gravid Uterus exhibited in figures is published by John Baskerville in Birmingham, England.
- Sugita Genpaku's Kaitai Shinsho ("New Text on Anatomy"), based on a Dutch publication, is published with illustrations in Japan, the first modern anatomy textbook produced there.
Physics
Technology
- January 27 – John Wilkinson patents a method for boring cannon from the solid, subsequently utilised for accurate boring of steam engine cylinders.{{cite web|first=J. R.|last=Harris|title=Wilkinson, John (1728–1808)|work=Oxford Dictionary of National Biography|publisher=Oxford University Press|year=2004|url=http://www.oxforddnb.com/view/article/29428|accessdate=2011-01-14}} {{ODNBsub}}
- Jesse Ramsden produces an advanced circular dividing engine with the support of the Board of Longitude.{{cite book|first=Daniel J.|last=Boorstin|authorlink=Daniel J. Boorstin|title=The Discoverers: a history of man's search to know his world and himself|url=https://archive.org/details/discoverers00boor|url-access=registration|location=New York|publisher=Random House|year=1983|isbn=978-0-394-40229-1}}{{cite book|last=Daumas|first=Maurice|title=Les Instruments scientifiques aux XVIIe et XVIIIe siècles|location=Paris|publisher=Presses Universitaires de France|year=1953}}
Awards
Births
- April 21 – Jean-Baptiste Biot (died 1862), French physicist.
- April 24 – Jean Marc Gaspard Itard (died 1838), French otorhinolaryngologist.
- April 28 – Francis Baily (died 1844), English astronomer.
- May 7 – Francis Beaufort (died 1856), Irish-born hydrographer.
- May 28 – Edward Howard (died 1816), English chemist.
- August 18 – Meriwether Lewis (died 1809), American explorer.
- September 26 – John Chapman (died 1845), American nurseryman.
- November 12 – Charles Bell (died 1842), Scottish-born anatomist.
- December 12 – William Henry (died 1836), English chemist.
Deaths
- February 4 – Charles Marie de La Condamine, French geographer (born 1701)
- May 1 – William Hewson, English surgeon, anatomist and physiologist, "father of haematology" (born 1739)
- July 9 – Anna Morandi Manzolini, Italian anatomist (born 1714){{cite book|first=Rebecca|last=Messbarge|title=The Lady Anatomist: The Life and Work of Anna Morandi Manzolini|location=Chicago|publisher=The University of Chicago Press|year=2019|page=168|isbn=978-0-22652-083-4}}