| Date | Text | |
|---|---|---|
01 Apr 1536
Ignazio Danti |
birth Ignazio Danti Ignazio Danti, Italian mathematician and astronomer (died 1586). |
|
01 Apr 1549
Andrew Boorde |
death Andrew Boorde Andrew Boorde, English physician and traveller (born 1490) |
|
01 Apr 1564
Pierre Belon |
death Pierre Belon Pierre Belon, French naturalist (born 1517) (murdered) |
|
01 Apr 1578
William Harvey |
birth William Harvey William Harvey, English physician (died 1657) |
|
01 Apr 1640
Georg Mohr |
birth Georg Mohr Georg Mohr, Danish mathematician (died 1697) |
|
01 Apr 1702
Clopton Havers |
death Clopton Havers Clopton Havers, English physician who did pioneering research on the microstructure of bone (born 1657) |
|
01 Apr 1718
James Petiver |
death James Petiver James Petiver, English naturalist and apothecary (born c. 1665) |
|
01 Apr 1750
Pehr Osbeck |
Pehr Osbeck (exploration) Pehr Osbeck sets out on a primarily botanical expedition to China. |
|
01 Apr 1776
Sophie Germain |
birth Sophie Germain Sophie Germain, French mathematician (died 1831) |
|
01 Apr 1793
Thomas Addison |
birth Thomas Addison Thomas Addison, English physician and scientist (died 1860) |
|
01 Apr 1803
Miles Joseph Berkeley |
birth Miles Joseph Berkeley Miles Joseph Berkeley, English cryptogamist (died 1889) |
|
01 Apr 1813
William Charles Wells |
William Charles Wells (biology) William Charles Wells reads a paper to the Royal Society of London making the first clear statement about natural selection. |
|
01 Apr 1814
Abraham Colles |
Abraham Colles (medicine) Abraham Colles publishes "On the Fracture of the Carpal Extremity of the Radius" in the Edinburgh Medical and Surgical Journal, describing the injury which continues to be known as Colles' fracture. |
|
01 Apr 1826
American |
American (technology) American inventor Samuel Morey patents a compressionless internal combustion engine in the United States. |
|
01 Apr 1845
Lord Rosse |
Lord Rosse (astronomy) Lord Rosse discovers that the nebula M51 has a spiral structure. |
|
01 Apr 1854
Dr John Snow |
Dr John Snow (medicine) May – Dr John Snow traces the source of one outbreak of cholera in London (which kills 500) to a single water pump, validating his theory that cholera is water-borne, and forming the starting point for epidemiology. |
|
01 Apr 1867
English |
English First clear recorded use of the word science in English with its modern usage as restricted to the natural and physical sciences (by Catholic theologian and mathematician W. G. Ward writing in the London-published Dublin Review). |
|
01 Apr 1874
Frances Morgan |
Frances Morgan (medicine) Dr Frances Morgan marries Dr George Hoggan and they set up the first husband-and-wife general medical practice in the United Kingdom |
|
01 Apr 1887
Carte du Ciel |
Carte du Ciel (astronomy) Carte du Ciel project initiated by Paris Observatory director Amédée Mouchez. |
|
01 Apr 1900
George Jackson Mivart |
death George Jackson Mivart George Jackson Mivart (born 1827), English biologist. |
|
01 Apr 1922
Hermann Rorschach |
death Hermann Rorschach Hermann Rorschach (born 1884), psychiatrist. |
|
01 Apr 1927
Georges Lemaître |
Georges Lemaître (physics) Abbé Georges Lemaître publishes in the Annales de la Société Scientifique de Bruxelles "Un Univers homogène de masse constante et de rayon croissant rendant compte de la vitesse radiale des nébuleuses extra-galactiques" proposing the theory of the expansion of the Universe, deriving what will become known as Hubble's law, making the first estimation of what will become called the Hubble constant, and proposing what becomes known as the Big Bang theory of the origin of the Universe, which he calls his 'hypothesis of the primeval atom'. |
|
01 Apr 1928
Leslie Comrie |
Leslie Comrie (computer science) Leslie Comrie publishes an article "On the Construction of Tables by Interpolation", describing the use of punched card equipment for interpolating tables of data, and becomes the first to use such equipment for scientific calculations, using Fourier synthesis to compute the principal terms in the motion of the Moon for 1935–2000. |
|
01 Apr 1940
Wangari Muta Mary Jo Maathai |
birth Wangari Muta Mary Jo Maathai Wangari Muta Mary Jo Maathai (died 2011), Kenyan biologist and winner of the Nobel Peace Prize. |
|
01 Apr 1948
Ralph Asher Alpher |
Ralph Asher Alpher (physics) Physicists Ralph Asher Alpher and George Gamow publish the Alpher–Bethe–Gamow paper about the Big Bang. |
|
01 Apr 1949
Manchester Mark 1 |
Manchester Mark 1 (computer science) Manchester Mark 1 computer operable at the University of Manchester. |
|
01 Apr 1950
Richard Hamming |
Richard Hamming (computer science) Publication of Richard Hamming's paper "Error detecting and error correcting codes", seminal in the construction of error detection and correction codesand from which Hamming code and the Hamming distance derive. |
|
01 Apr 1957
IBM |
IBM (computer science) IBM delivers the first compiler for the FORTRAN scientific programming language. It becomes the most widely used computer language for technical work. |
|
01 Apr 1958
BBC Radiophonic Workshop |
BBC Radiophonic Workshop (technology) The BBC Radiophonic Workshop is established. |
|
01 Apr 1960
Frank Drake |
Frank Drake (astronomy and space ) July – Cornell University astronomer Frank Drake begins searching for signs of extraterrestrial intelligence with Project Ozma at the National Radio Astronomy Observatory at Green Bank, West Virginia. |
|
01 Apr 1960
weather satellite |
weather satellite (meteorology) The United States launches the first weather satellite, TIROS-1. |
|
01 Apr 1963
Ministry of Public Building and Works (Great Britain) |
Ministry of Public Building and Works (Great Britain) (history of science a) Industrial Monuments Survey for the Ministry of Public Building and Works (Great Britain) commenced by Rex Wailes. |
|
01 Apr 1968
Andrew Garve |
Andrew Garve (computer science) First book printed completely using electronic composition, the United States edition of Andrew Garve's thriller The Long Short Cut. |
|
01 Apr 1968
Lev Davidovich Landau |
death Lev Davidovich Landau Lev Davidovich Landau (born 1908), Russian physicist. |
|
01 Apr 1971
Kathleen Lonsdale |
death Kathleen Lonsdale Dame Kathleen Lonsdale (b. 1903), Irish-born crystallographer. |
|
01 Apr 1976
Apple Computer |
Apple Computer (computer science) Apple Computer Company is formed by Steve Jobs and Steve Wozniak and the latter begins assembling its first personal computer hobbyists kits for sale later in the year in the U.S. |
|
01 Apr 1983
Kary Mullis |
Kary Mullis (biology) Kary Mullis discovers polymerase chain reaction. |
|
01 Apr 1993
Sibelius |
Sibelius (computer science) Release of the Sibelius music notation program, developed by British twins Ben and Jonathan Finn. |
|
01 Apr 2004
Gmail |
Gmail (computing) Gmail launches. |
|
01 Apr 2004
Genesis |
Genesis (space exploration) The Genesis probe closes and seals its particle collection instrument, and begins to return to Earth. |
OnThisDay.net