John Barnard

American security engineer | Massachusetts Institute of Technology | Beijing: May 4, 1991 - Belgrade: April 7, 1811 | Yan Zhu | Beijing: May 4, 1991

Spanish philosopher, journalist and teacher | University Ramon Llull | Barcelona: May 4, 1981 - Elva: October 14, 1931 | Jordi Graupera i Garcia-Milà (Jordi

Estonian philosopher | May 4, 1979 - Twickenham: June 10, 1744 | Riin Sirkel | May 4, 1979 - Twickenham: June 10, 1744

economist and academic | Fellow of the Econometric Society (2020) | École polytechnique, Harvard University | Paris: May 4, 1977 - Ferrara: January 1, 1468

Austrian philosopher and artist | Graz: May 4, 1973 - Jena: July 28, 2013 | Günther Friesinger (Gunther Friesinger) | Graz: May 4, 1973 - Jena: July 28, 2013

scientist | Solingen: May 4, 1970 - Leinster: June 13, 1817 | Jörg Müller-Lietzkow (Jorg Muller-Lietzkow) | Solingen: May 4, 1970 - Leinster: June 13, 1817

Libyan linguist, philosopher, poet, historian, and political critic | May 4, 1963 - Paris: June 10, 1986 | A. Monem Mahjoub | May 4, 1963 - Paris: June 10, 1986

Polish researcher | Adam Mickiewicz University in Poznań, Southern Methodist University | Poznań: May 4, 1963 - Greifswald: July 7, 1872 | Marcin Paprzycki

American physicist, mathematician and origami expert | Fellow of the American Mathematical Society (2013) | Stanford University, California Institute of Technology

Luxembourg lichenologist and mycologist | University of Liège, Free University of Brussels, Lycée Michel-Rodange | Luxembourg: May 4, 1959

Islamologist (1957–2019) | École pratique des hautes études | Freiburg im Breisgau: May 4, 1957 - Abidjan: August 26, 2019 | Christian Bonaud - Christian

German historian | Technische Universität Berlin, Collège de France, Goethe University Frankfurt | Frankfurt: May 4, 1956 - Bucharest: October 8, 1954

Polish physicist | Adam Mickiewicz University in Poznań | Piła: May 4, 1956 - Warsaw: June 16, 1989 | Jerzy Stanisław Janicki (Jerzy Stanislaw Janicki)

German particle physicist | University of Hamburg | Hamburg: May 4, 1955 - Heidelberg: October 24, 2018 | Karlheinz Meier | Hamburg: May 4, 1955 - Heidelberg

physicist | National University of Kharkiv | Kharkiv: May 4, 1954 - Kharkiv: February 6, 2019 | Andrii V Khotkevich | Kharkiv: May 4, 1954 - Kharkiv: February 6, 2019

American mathematician | Peter Henrici Prize (2015), Fellow of the Society for Industrial and Applied Mathematics (2021), Norbert Wiener Prize in Applied

German astrophysicist and physicist | Ludwig-Maximilian-University in Munich | Bietigheim-Bissingen: May 4, 1954 - Lviv: July 1, 1941 | Ralf Jaumann

French writer, philosopher and poet | Paris: May 4, 1953 - Rennes: March 14, 1976 | Romain Sarnel | Paris: May 4, 1953 - Rennes: March 14, 1976

German politician | Order of Merit of North Rhine-Westphalia (2018) | University of Kiel | Flensburg: May 4, 1952 - Auschwitz: September 7, 1942 | Bärbel

British mathematician | honorary doctor of the University of Toulouse (2007), Pólya Prize (2000), Whitehead Prize (1986), Fellow of the Institute of

Canadian historian of science | University of Toronto | Sarnia: May 4, 1951 - Bucharest: March 17, 2016 | Craig Fraser | Sarnia: May 4, 1951 - Bucharest: March 17, 2016

American politician | Dartmouth College, Harvard Law School | Chicago: May 4, 1951 - Leiden: July 31, 2000 | Todd Stern | Chicago: May 4, 1951 - Leiden: July

Russian mathematician (1950–2020) | Tsirelson space, Tsirelson's bound | Saint Petersburg State University, Mathematics and Mechanics Faculty, St. Petersburg

Dutch mathematician and computer scientist | John von Neumann Theory Prize (2006), Fellow of the Society for Industrial and Applied Mathematics (2009)

Bulgarian mathematician (1948-2012) | Moscow State University | Sofia: May 4, 1948 - March 30, 2012 | Andrey Todorov | Sofia: May 4, 1948 - March 30, 2012

Slovenian chemist | Ambassador of Science of the Republic of Slovenia, Boris Kidrič Fund award, Kidrič Prize | University of Ljubljana | Dolenja vas: May 4

Spanish chemist | gold medal (2000), honorary doctor of the University of Valencia (2011) | University of Seville | Barcelona: May 4, 1946 - Córdoba: January 9, 2022

Iranian politician | University of Tehran | Tehran: May 4, 1945 - Liège: March 19, 1685 | Gholam-Ali Haddad-Adel | Tehran: May 4, 1945 - Liège: March 19, 1685

French philosopher | University of Lyon, University of Paris | Nades: May 4, 1945 - Los Angeles: December 29, 1939 | Sylviane Agacinski | Nades: May 4, 1945

American mathematician | Fellow of the American Mathematical Society (2013) | University of California, Berkeley, Northwestern University | Saint Paul: May 4

Sidney Hellman Ehrman Professor of History, University of California, Berkeley | Martin Warnke Medal (2003), Berlin Prize (2010), Herbert Baxter Adams Prize

Russian theatre director | Commandeur des Arts et des Lettres, Honored art worker of the Russian Federation, Chevalier des Arts et des Lettres, Europe Theatre

Russian scientist | Honorary Worker of General Education of the Russian Federation | Krasnoyarsk State Medical University | Yurkivtsi: May 4, 1942 - January 10, 2022

Order of the Badge of Honour, Medal "Veteran of Labour", Medal "For Distinguished Labour" | Tomsk State University | May 4, 1941 - St John's Wood: March 17, 1935

Physicist | Guggenheim Fellowship | New York City: May 4, 1939 - Houston: January 1, 2008 | Malvin Carl Teich | New York City: May 4, 1939 - Houston: January 1, 2008

Polish chess player | Bydgoszcz: May 4, 1938 - Mexico City: July 11, 2004 | Janusz Woda | Bydgoszcz: May 4, 1938 - Mexico City: July 11, 2004

Mexican writer (1939–2010) | National Prize for Arts and Sciences (2005), Guggenheim Fellowship, FIL Award (2008), FIL Award (2006), Premio Mazatlán de

Norwegian politician | University of Oslo | Oslo: May 4, 1937 - Bærum Municipality: November 8, 2024 | Aud Voss Eriksen | Oslo: May 4, 1937 - Bærum

Russian scientist | Medal "In Commemoration of the 300th Anniversary of Saint Petersburg", Jubilee Medal "300 Years of the Russian Navy", Medal "Veteran of

American chemist | Helmholtz Medal (2020), F. A. Cotton Medal (2003), Chemical Pioneer Award (1995), Priestley Medal (2008), Linus Pauling Award (2000)

anglican missionary | Dendermonde: May 4, 1934 - Arad: August 5, 1895 | Pierre de Smedt | Dendermonde: May 4, 1934 - Arad: August 5, 1895

Georgian geologist | Georgian Technical University | Tbilisi: May 4, 1933 - Chelyabinsk: March 3, 2021 | David Shengelia | Tbilisi: May 4, 1933 - Chelyabinsk

American materials scientist (1933–2021) | Fu Foundation School of Engineering and Applied Science | May 4, 1933 - June 3, 2021 | Sheldon M. Wiederhorn | May

Hungarian philosopher | Eötvös Loránd University | Budapest: May 4, 1932 - Düsseldorf: October 24, 1985 | András Gedő (Andras Gedo) | Budapest: May 4

Polish philosopher (1930-2018) | Gold Cross of Merit | Faculty of Philosophy and Sociology, University of Warsaw, Warsaw University of Technology | Warsaw: May

German biochemist | University of Bonn | Bonn: May 4, 1929 - 12th arrondissement of Paris: November 27, 2020 | J. Heinrich Matthaei | Bonn: May 4, 1929 - 12th

Moldovan scientist | Order of Friendship of Peoples, Order of the Badge of Honour, Order of Work Merit, Order of the Republic, Order of the Red Banner of Labour

Hungarian sociologist (1928-2015) | Hazám-díj (2008), Alföld Prize (1981), Széchenyi Prize (2006) | Debrecen: May 4, 1928 - Budapest: January 10, 2015

Spanish scientist | Mexico: May 4, 1927 - Madrid: March 28, 2011 | Ysidro Valladares Sánchez (Ysidro Valladares Sanchez) | Mexico: May 4, 1927 - Madrid: March 28, 2011

Canadian-American physicist (1926-2005) | Fellow of the American Physical Society, Philip Hauge Abelson Prize (1996), Dwight Nicholson Medal for Outreach

American game designer (1922–2004) | Spiel des Jahres (1982), Deutscher Spielepreis Special Prize (1992) | Inkognito, TwixT, Ricochet Robots | Arizona: May

American organic chemist (1922-1998) | Montana State University, University of Illinois system | Colorado: May 4, 1922 - April 10, 1998 | Odette L. Shotwell

1940s physicist who died of radiation poisoning (1921–1945) | Purdue University, Massachusetts Institute of Technology | Waterbury: May 4, 1921 - Los Alamos

1918-2023) Panamanian scientist | Chiriquí Province: May 4, 1918 - Panama City: January 20, 2023 | Ligia Herrera Jurado | Chiriquí Province: May 4, 1918

theoretical physicist (1916-1999) | Guggenheim Fellowship (1959) | Johns Hopkins University | Hagerstown: May 4, 1916 - University of Chicago Medical Center

scientist and mathematician (1916–1983) | Guggenheim Fellowship (1958), Josiah Willard Gibbs Lectureship (1982), Frederick W. Lanchester Prize (1959)

German chemist (1914–1984) | Goethe University Frankfurt | Bischofsheim in der Rhön: May 4, 1914 - Glashütten: October 22, 1984 | Hermann Hartmann

Japanese physicist | Osaka University | May 4, 1913 - April 2, 1993 | Tetsuo Wakatsuki | May 4, 1913 - April 2, 1993 | Osaka University

German mathematician (1911-1984) | University of Göttingen | Lendorf: May 4, 1911 - Karlsruhe: August 1, 1984 | Hans Wittich | Lendorf: May 4, 1911

Austrian-American philosopher (1906-1987) | University of Vienna | Vienna: May 4, 1906 - Iowa City: April 21, 1987 | Gustav Bergmann | Vienna: May 4, 1906

American physicist (1902-1973) | William Bowie Medal (1972), Guggenheim Fellowship (1927), Alexander Agassiz Medal (1966) | Princeton University, Washington

Governor of the Netherlands Antilles (1902–1981) | Zilveren Anjer (1973) | Utrecht University | Kralendijk: May 4, 1902 - Amsterdam: December 3, 1981 | Cola

German engineer (1899–1971) | Technical University of Darmstadt | Rüsselsheim am Main: May 4, 1899 - Samedan: April 8, 1971 | Fritz von Opel - Friedrich

Order of Lenin | Freiberg University of Mining and Technology | May 4, 1898 - Baku: December 15, 1993 | Aşraf Aliyev (Asraf Aliyev) | May 4, 1898 - Baku

Italian engineer (1883–1959) | Faraday Medal (1959) | Milan: May 4, 1883 - Milan: February 17, 1959 | Luigi Emanueli | Milan: May 4, 1883 - Milan: February 17, 1959

May 4, 1881 - Florence: May 3, 1453 | Julius Bettinger | May 4, 1881 - Florence: May 3, 1453

Spanish inventor (1880-1961) | Piedrabuena: May 4, 1880 - Piedrabuena: November 6, 1961 | Mónico Sánchez Moreno (Monico Sanchez Moreno) | Piedrabuena: May 4

Belgian chemist, physicist, and engineer (1877-1935) | City of Brussels: May 4, 1877 - Villeneuve-Loubet: May 28, 1935 | Robert B. Goldschmidt | City of

Czech philosopher | Faculty of Arts, Charles University in Prague | Tuř: May 4, 1877 - Mauthausen concentration camp: March 13, 1942 | Josef Tvrdý (Josef

American electrical engineer (1874–1941) | IEEE Fellow, IEEE Morris N. Liebmann Memorial Award (1925), IEEE Lamme Medal (1936), Edison Medal (1930)

1872–1926) | Pest: May 4, 1872 - Budapest: March 26, 1926 | Aladár Zubriczky (Aladar Zubriczky) | Pest: May 4, 1872 - Budapest: March 26, 1926

German philosopher and writer (1871–1946) | Gołańcz: May 4, 1871 - Paris: September 9, 1946 | Salomo Friedlaender (Mynona) | Gołańcz: May 4, 1871

Dutch physicist and lawyer (1870-1926) | Leiden University, University of Paris | Zoetermeer: May 4, 1870 - Bilthoven: October 25, 1926 | Antonius van den

Danish philosopher (1868-1936) | Aakirkeby: May 4, 1868 - Charlottenlund: May 8, 1936 | Axel Dam | Aakirkeby: May 4, 1868 - Charlottenlund: May 8, 1936

French biologist from Amiens | École Normale Supérieure | Amiens: May 4, 1856 - Alexandria: September 19, 1883 | Louis Thuillier | Amiens: May 4, 1856

Swiss physicist (1854-1949) | Illnau-Effretikon: May 4, 1854 - Oberhofen am Thunersee: March 24, 1949 | Ludwig Zehnder | Illnau-Effretikon: May 4, 1854

Polish physician and military personnel | Order of Saint Stanislaus, 3rd class | Vilnius Gymnasium, Ludwig-Maximilian-University in Munich, Imperial University of Dorpat

English mathematician and philosopher | Fellow of the Royal Society | Trinity College, University of Cambridge, King's College London | Exeter: May 4, 1845

Irish inventor | May 4, 1844 - May 23, 1921 | Patrick Cunningham | May 4, 1844 - May 23, 1921

American inventor | Broome County: May 4, 1844 - January 1, 1889 | Lucien Stephen Crandall | Broome County: May 4, 1844 - January 1, 1889

Scottish engineer and inventor | May 4, 1841 - May 13, 1906 | Andrew Betts Brown | May 4, 1841 - May 13, 1906

1840-1907) | Humboldt University of Berlin | Töss: May 4, 1840 - Zurich: March 14, 1907 | Johann Jakob Rebstein | Töss: May 4, 1840 - Zurich: March 14, 1907

Norwegian scientist (1839–1925) | Knight of the Order of the Polar Star, Commander of the Order of St. Olav | University of Oslo | Bergen: May 4, 1839

British biologist and comparative anatomist (1825–1895) | Fellow of the Linnean Society of London (1858), Copley Medal (1888), Clarke Medal (1880), Wollaston

American businessman and philanthropist (1821–1903) | Pittsfield: May 4, 1821 - Newport: October 19, 1903 | Gordon McKay | Pittsfield: May 4, 1821 - Newport

American scientist and inventor (1818-1905) | New York City: May 4, 1818 - February 7, 1905 | Thomas Adams | New York City: May 4, 1818 - February 7, 1905

Italian philosopher (1813-1885) | Amelia: May 4, 1813 - San Giorgio a Cremano: July 13, 1885 | Augusto Vera | Amelia: May 4, 1813 - San Giorgio a Cremano: July 13, 1885

Austrian chemist (1813–1871) | Jihlava: May 4, 1813 - Vienna: November 21, 1871 | Johann Florian Heller | Jihlava: May 4, 1813 - Vienna: November 21, 1871

English inventor (1806-1879) | Albert Medal (1867) | University of Edinburgh | Ealing: May 4, 1806 - Farnham: June 25, 1879 | William Fothergill Cooke

American lawyer and inventor | Philadelphia: May 4, 1803 - Baltimore: September 11, 1891 | John H. B. Latrobe | Philadelphia: May 4, 1803 - Baltimore: September 11, 1891

Polish writer | Vilnius University | Mir: May 4, 1799 - Uradžajnaja: September 9, 1856 | Florian Bochwic | Mir: May 4, 1799 - Uradžajnaja: September 9, 1856

French chemist (1777-1857) | 72 names on the Eiffel Tower, Grand Officer of the Legion of Honour, Foreign Member of the Royal Society (1824), Galvanism Prize

German philosopher, psychologist, and founder of pedagogy as an academic discipline | University of Jena | Oldenburg: May 4, 1776 - Göttingen: August 14, 1841

British surgeon | Fellow of the Royal Society | May 4, 1764 - January 30, 1846 | Joseph Constantine Carpue | May 4, 1764 - January 30, 1846 | Fellow of the Royal Society

1764-1829) | Law Faculty of Lviv University | Zboj: May 4, 1764 - Saint Petersburg: June 11, 1829 | Peter Dimitrovič Lodij (Peter Dimitrovic Lodij) | Zboj

German philosopher | University of Erlangen–Nuremberg | Volkstedt: May 4, 1762 - Vilnius: May 10, 1816 | Johann Heinrich Abicht (Ernest Polarch) | Volkstedt

French scientist, political advisor and sailor (1733-1799) | 72 names on the Eiffel Tower | The Borda method, Borda–Carnot equation | École royale du génie

Italian maker of musical instruments | Padua: May 4, 1655 - Florence: January 27, 1731 | Bartolomeo Cristofori | Padua: May 4, 1655 - Florence: January 27, 1731

English mathematician and politician | May 4, 1631 - March 17, 1679 | William Brereton, 3rd Baron Brereton | May 4, 1631 - March 17, 1679

Italian alchemist, prophet and doctor | Milan: May 4, 1627 - Rome: August 10, 1695 | Giuseppe Francesco Borri | Milan: May 4, 1627 - Rome: August 10, 1695

German Christian mystic and theologian (1575-1624) | The Aurora | Stary Zawidów: May 4, 1575 - Görlitz: November 17, 1624 | Jakob Böhme (Jakob Bohme