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Science on the 20th of February in history

Science

Date	Type	Text
20 Feb 1762 Tobias Mayer	science	death Tobias Mayer Tobias Mayer, German astronomer (born 1723)	0
20 Feb 1778 Laura Bassi	science	death Laura Bassi Laura Bassi, Italian scientist (born 1711)	0
20 Feb 1823 James Weddell	science	James Weddell (exploration) James Weddell's expedition to Antarctica reaches latitude 74°15' S and longitude 34°16'45" W, the most southerly position that will be attained for more than 80 years.	0
20 Feb 1844 Ludwig Boltzmann	science	birth Ludwig Boltzmann Ludwig Boltzmann (died 1906), Austrian physicist famous for the invention of statistical mechanics.	0
20 Feb 1846 Francesco de Vico	science	Francesco de Vico (astronomy) Francesco de Vico discovers comet 122P/de Vico.	0
20 Feb 1873 Willoughby Smith	science	Willoughby Smith (physics) English electrical engineer Willoughby Smith publishes his discovery of the photoconductivity of the element selenium	0
20 Feb 1913 Robert von Lieben	science	death Robert von Lieben Robert von Lieben (born 1878), physicist.	0
20 Feb 1941 Polish	science	Polish Polish microbiologist Ludwik Hirszfeld, his wife, Hanka, and daughter are forced to move into the Warsaw ghetto; here for two years he organizes anti-epidemic measures and vaccination campaigns against typhus and typhoid, as well as conducting secret medical courses.	0
20 Feb 1943 cinder cone	science	cinder cone (earth sciences) The cinder cone volcano Parícutin begins to appear in Mexico, giving volcanologists an unusual opportunity to observe its complete life cycle.	0
20 Feb 1947 fruit flies	science	fruit flies (astronomy and space ) The first living things sent into space (and returned) are fruit flies, accompanied by rye and cotton seeds, aboard a V-2 rocket launched by the U.S. Army Ordnance Corps which reaches an altitude of 68 miles (109 km).	0
20 Feb 1962 Mercury program	science	Mercury program (astronomy and space ) Mercury program: While aboard Friendship 7, John Glenn orbits the Earth three times in 4 hours, 55 minutes, becoming the first American to do so.	0
20 Feb 1965 Ranger 8	science	Ranger 8 (astronomy and space ) Ranger 8 crashes into the Moon after a successful mission of photographing possible landing sites for the Apollo program astronauts.	0
20 Feb 1982 Derek Jackson	science	death Derek Jackson Derek Jackson (b. 1906), British-born spectroscopist and steeplechase rider.	0
20 Feb 1996 Solomon Asch	science	death Solomon Asch Solomon Asch (b. 1907), Polish American social psychologist.	0

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