1634 in science

• Johannes Kepler's fictional account of the view from the Moon Somnium (written 1608) is published posthumously by his son.{{Cite journal |last=Christianson |first=Gale E. |date=1976 |title=Kepler's Somnium: Science Fiction and the Renaissance Scientist |url=https://www.jstor.org/stable/4239001 |journal=Science Fiction Studies |volume=3 |issue=1 |pages=79–90 |jstor=4239001 |issn=0091-7729}}

• Thomas Johnson begins publishing Mercurius Botanicus, including a list of indigenous British plants.{{cite DNB |wstitle= Johnson, Thomas (d.1644) |volume= 30 |last= Boulger |first= George Simonds |author-link= George Simonds Boulger |pages=47-48 |short= 1}}

• Gilles de Roberval shows that the area under a cycloid is three times the area of its generating circle.{{cite book|first=Léon|last=Auger|title=Un savant méconnu, Gilles Personne de Roberval, 1602-1675: son activité intellectuelle dans les domaines mathématique, physique, mécanique et philosophique|location=Paris|publisher=Blanchard|year=1962}}

• Louise Bourgeois Boursier publishes her Collection of Secrets on obstetrics in Paris, including techniques such as podalic version.{{cite encyclopedia|url=http://www.encyclopedia.com/topic/Louise_Bourgeois_(French_midwife).aspx|encyclopedia=Encyclopedia of World Biography|year=2005|title=Bourgeois, Louyse|accessdate=2011-10-02}}

• Publication of Insectorum sive Minimorum Animalium Theatrum in London, compiled posthumously from the work of Edward Wotton, Conrad Gesner and Thomas Penny by Thomas Muffet and prepared for publication by Théodore de Mayerne.{{cite DNB |wstitle= Moffett, Thomas |volume= 38 |last= Lee |first= Sidney |author-link= Sidney Lee |pages=101-103 |short= 1}}

• The Académie Française is formed by Cardinal Richelieu (it will be formally established in 1635).{{Cite book |last=Hollier |first=Denis |url=https://books.google.com/books?id=Dr_8DwAAQBAJ |title=A New History of French Literature |date=1998-08-19 |publisher=Harvard University Press |isbn=978-0-674-25461-9 |pages=267 |language=en}}

{{main|births in 1634}}

{{Further|Category:1634 births}}

• February 15 – Wilhelm Fabry, German-born surgeon (born 1560)
• June 26 – Nikolaus Ager, French botanist (born 1568)
• Marin le Bourgeoys, French inventor and artist (born c. 1550) (approximate date)
• Martin Llewellyn, British cartographer (born 1565?)

{{reflist}}

Category:1634

Category:17th century in science

Category:1630s in science