Estonian journalist, physicist and teacher | University of Tartu, Jõgeva Gymnasium | Jõgeva: April 15, 1986 - Twickenham: June 10, 1744 | Andres Juur

researcher | Ludwig Boltzmann Prize (2017) | Rostov-on-Don: April 15, 1985 - Utrecht: November 12, 1660 | Mikhail Lemeshko - Михаил Петрович Лемешко

Poltava National Pedagogical University, Poltava polytechnic college | April 15, 1978 - 3rd arrondissement of Lyon: November 21, 1964 | Anatolii Shcherban

Ukrainian project manager | Kyiv National Taras Shevchenko University Faculty of Geology, Faculty of Economics of Taras Shevchenko Kyiv National University

Hasanuddin University | April 15, 1969 - Rumah Sakit Sint Carolus: February 11, 1967 | Taruna Ikrar | April 15, 1969 - Rumah Sakit Sint Carolus: February 11, 1967

scientist | April 15, 1961 - Saint Petersburg: September 6, 1832 | Jasna Čapo Žmegač (Jasna Capo Zmegac) | April 15, 1961 - Saint Petersburg: September 6, 1832

Ukrainian scientist | National Aerospace University – Kharkiv Aviation Institute | Kharkiv: April 15, 1958 - Cresskill: May 14, 2006 | Eduard Rubin

Russian mathematician | Rostov State University | Kyiv: April 15, 1956 - Boston: October 5, 2010 | Yan Soibelman | Kyiv: April 15, 1956 - Boston: October 5, 2010

American philosopher | Rutgers Preparatory School, Princeton University | Prague: April 15, 1952 - Moscow: May 12, 2020 | Avital Ronell | Prague: April 15

German academic | Officer's Cross of the Order of Merit of the Federal Republic of Germany (2009), Philip Morris Research Prize (1994) | Dudweiler: April 15

Russian mathematician | Russian Federation Presidential Certificate of Gratitude, Knight of the Legion of Honour, Order "For Merit to the Fatherland", 3rd

American astronaut | NASA Space Flight Medal, Medal "For Merit in Space Exploration" | Scottsdale High School, United States Naval Academy, University of

Swiss professor | University of Mannheim, University of Marburg | Halle (Saale): April 15, 1950 - Atherton: December 30, 2009 | Roland Scholz | Halle (Saale)

Russian biochemist | Order of Honour, Order of Friendship, Merited Scientist of the Russian Federation | Petrozavodsk State University | Belomorsk: April 15

scientist | Merited Scientist of the Russian Federation | Samarkand: April 15, 1950 - Moscow: November 18, 1930 | Sergey Eduardovich Avetisov | Samarkand

American mathematician | Western Michigan University | April 15, 1950 - Rome: May 12, 1927 | Ronald J. Gould | April 15, 1950 - Rome: May 12, 1927 | Western

Oles Honchar Dnipro National University | April 15, 1947 - January 1, 1957 | Oleg Mikhilovich Boyarkin | April 15, 1947 - January 1, 1957

Chilean physicist | Guggenheim Fellowship (1982), National Prize for Exact Sciences (1995), Guggenheim Fellowship (1991) | Liceo Manuel de Salas, University of

Dutch scientist | Leiden University | The Hague: April 15, 1947 - January 1, 1961 | Jos W. M. van der Meer | The Hague: April 15, 1947 - January 1, 1961

Italian mathematician | University of Milan, Manzoni | Milan: April 15, 1945 - Oakland: August 17, 1933 | Emilio Spedicato | Milan: April 15, 1945 - Oakland

German mathematician (1943–2005) | University of Düsseldorf | April 15, 1943 - April 30, 2005 | Ulrich Hirsch | April 15, 1943 - April 30, 2005 | University

Peruvian-Brazilian mathematician | TWAS Prize for Mathematics (1996), Almirante Álvaro Alberto Award (1996), Great Cross of the National Order of Scientific

American physician and biochemist | Fellow of the American Association for the Advancement of Science (2013), Bristol-Myers Squibb Award for Distinguished

philosopher (1941-2006) | Lebanese University, Saint Joseph University of Beirut | April 15, 1941 - Beirut: July 5, 2006 | Hassan Kobeissi | April 15, 1941

Russian scientist | Prize of the Government of the Russian Federation in the field of education, National Order of Merit, Russian Federation's Government

German physicist (1940–2020) | Officer's Cross of the Order of Merit of the Federal Republic of Germany (2010) | Eberhard-Ludwigs-Gymnasium | Dresden: April

American scientist | NIH MERIT award (1991), Garvan–Olin Medal (1985) | Bryn Mawr College, Stanford University | York: April 15, 1939 - Frankfurt: January 1, 1625

American scientist and businessman (1937-2020) | National Inventors Hall of Fame (2006), Fellow of the Biomedical Engineering Society, Fellow of the American

Russian scientist | Russian Federation Presidential Certificate of Honour, Medal of the Order "For Merit to the Fatherland", 1st class, Russian government

Welsh mathematician (1934-2009) | Victoria University of Manchester | Trecenydd: April 15, 1934 - Penarth: August 4, 2009 | James Wiegold | Trecenydd: April

Welsh mathematician and academic (1932-2004) | Bose–Einstein condensate | Marlborough Primary, Queen's University Belfast, Cardiff High School, Royal Belfast

Russian scientist | Merited worker of culture of the Russian Federation | Soviet Union: April 15, 1932 - Skopin: December 13, 2003 | Aleksey Krylov | Soviet

Canadian physicist (1932–2014) | Acfas Urgel-Archambeault Award (1971), Fellow of the Royal Society of Canada, Grand Officer of the National Order of Quebec

Italian historian of philosophy (1931–2014) | Knight Grand Cross of the Order of Merit of the Italian Republic, honorary doctorate of Ramon Llull University (2006)

Indian physicist | Shanti Swarup Bhatnagar Prize for Science and Technology (1969) | Cornell University | Rajshahi: April 15, 1929 - January 1, 2022 | Asoke

Indian businessman | Padma Bhushan in science & engineering | Moothedath High School, Imperial College London | Kannur: April 15, 1929 - Bengaluru: June 30, 2015

German biophysicist | Feldberg Foundation (1968), Cothenius Medal (2005) | University of Göttingen | Berlin: April 15, 1929 - New York City: January 1, 1896

German mathematician and historian of mathematics | Loyola High School (Montreal), Concordia University, University of Toronto | Mülheim an der Ruhr: April

American physicist, co-author of the Yang-Mills theory | Rumford Prize (1980) | George School, Columbia University | Englewood: April 15, 1928 - Charleston

German physicist (1927-2013) | Commander's Cross of the Order of Merit of the Federal Republic of Germany, Officer's Cross of the Order of Merit of the Federal

Italian writer, playwright and screenwriter (1926–2009) | Trieste: April 15, 1926 - Tivoli: October 21, 2009 | Renzo Rosso | Trieste: April 15, 1926

American mathematician (1924–1999) | Cole Prize in Algebra (1960), Guggenheim Fellowship (1954) | Erasmus Hall High School, Harvard University, Columbia University

Brazilian mathematician (1921–2019) | TWAS Prize for Mathematics (1986), Bunge Foundation Award (1969) | University of Chicago, Colégio Pedro II, Escola

Australian mathematician and veteran (1916-2009) | Trinity College, University of Sydney, University of Cambridge | Sydney: April 15, 1916 - October 29, 2009

British biochemist (1908–1996) | Commander of the Order of the British Empire, Fellow of the Royal College of Physicians of London, Fellow of the Royal Society

Polish sportsperson, chemist and athletics competitor | University of Warsaw | Warsaw: April 15, 1906 - Warsaw: May 29, 2002 | Hanna Jędrzejewska (Hanna

Australian politician (1905-1984) | Knight Bachelor (1969) | Monash University Faculty of Pharmacy and Pharmaceutical Sciences, University of Melbourne

Polish politician (1900-1954) | Order of the Cross of Grunwald, 3rd class, Commander of the Order of Polonia Restituta, Order of the Builders of People's

Soviet physical chemist (1896-1986) | Lomonosov Gold Medal (1969), Order of Lenin (1956), Order of Lenin (1976), Foreign Member of the Royal Society (1958)

New Zealand teacher, agricultural instructor, scientific administrator (1891–1980) | Fellow of the Royal Society Te Apārangi (1961), Fellow of the Royal

British classical historian (1886–1968) | honorary doctor of Durham University, Officer of the Order of the British Empire, honorary doctor of the University

American physicist | IEEE Medal of Honor (1959) | Massachusetts Institute of Technology, Harvard University | Somerville: April 15, 1885 - Waltham: March 8, 1975

Italian journalist and politician (1882-1926) | University of Florence | Naples: April 15, 1882 - Cannes: April 7, 1926 | Giovanni Amendola - Giovanni Battista

Austro-Hungarian psychologist (1880–1943) | Wilhelm Wundt Medal (1988) | philosophy faculty of the German university of Prague, Faculty of Law, German

Scottish philosopher and translator (1877–1971) | Knight Commander of the Order of the British Empire, doctor honoris causa from the University of Paris

German physicist (1874-1957) | Goethe Medal for Art and Science (1939), Nobel Prize in Physics (1919), Matteucci Medal (1915) | Stark effect

Polish chemist | Imperial University of Dorpat, University of Warsaw | Warsaw: April 15, 1871 - Kraków: December 5, 1913 | Jan Sten - Ludwik Bruner | Warsaw

German engineer (1871-1959) | IEEE Medal of Honor (1928), Commander's Cross of the Order of Merit of the Federal Republic of Germany (1952), Goethe Medal for

German chemist (1870-1940) | Wrocław: April 15, 1870 - Rostock: May 27, 1940 | Richard Stoermer | Wrocław: April 15, 1870 - Rostock: May 27, 1940

Swedish physicist, mathematician and writer | Falu Kristine church parish: April 15, 1863 - Kungsholm parish: October 6, 1957 | Henrik Petrini | Falu Kristine

1860-1932) | Hochheim: April 15, 1860 - May 13, 1932 | Karl Emil Markel | Hochheim: April 15, 1860 - May 13, 1932

British journalist (1860-1929) | Colchester Royal Grammar School | Colchester: April 15, 1860 - Colchester: April 1, 1929 | Charles Benham | Colchester: April

German mathematician (1858–1926) | University of Göttingen | Zusmarshausen: April 15, 1858 - Karlsruhe: August 7, 1926 | Adolf Krazer | Zusmarshausen: April

French sociologist (1858–1917) | The Elementary Forms of the Religious Life, The Division of Labour in Society, Education and Sociology (book) | École

Russian-American inventor (1856-1928) | Minsk: April 15, 1856 - Cannes: March 14, 1928 | Conrad Hubert | Minsk: April 15, 1856 - Cannes: March 14, 1928

Iranian Bábist writer | Kerman: April 15, 1855 - Tabriz: July 17, 1878 | Sheikh Ahmad Rouhi | Kerman: April 15, 1855 - Tabriz: July 17, 1878

Russian (1846-1929) | Imperial University of Dorpat | Pärnu: April 15, 1846 - Yekaterinburg: January 1, 1929 | Hermann Ferdinand Abels | Pärnu: April 15

Austrian chemist (1843-1903) | Vienna: April 15, 1843 - Vienna: July 18, 1903 | Franz Schwackhöfer (Franz Schwackhofer) | Vienna: April 15, 1843 - Vienna: July 18, 1903

German chemist (1841–1891) | Annenschule, Imperial University of Dorpat | Dobele: April 15, 1841 - Wrocław: September 27, 1891 | Victor von Richter

American businessman (1835-1918) | April 15, 1835 - May 12, 1918 | W. W. Marsh | April 15, 1835 - May 12, 1918

German chemist (1834-1903) | Erfurt: April 15, 1834 - Frankfurt: May 15, 1903 | Eugen Lucius | Erfurt: April 15, 1834 - Frankfurt: May 15, 1903

Italian philosopher and educator (1827–1913) | Split: April 15, 1827 - Venice: December 26, 1913 | Giorgio Politeo | Split: April 15, 1827 - Venice: December 26, 1913

American inventor and businessman (1822-1895) | Templeton: April 15, 1822 - October 13, 1895 | Sylvanus Sawyer | Templeton: April 15, 1822 - October 13, 1895

Russian peasant philosopher (1820 - 1898) | Donetskiy Okrug: April 15, 1820 - Minusinsk Uyezd: November 3, 1898 | Timofei Bondarev | Donetskiy Okrug: April 15

German polymath, linguist and mathematician (1809–1877) | honorary doctor of the University of Tübingen | Humboldt University of Berlin, Martin Luther

Dutch chemist | Grand Officer of the Order of the Oak Crown, Commander of the Order of the Oak Crown | Leiden University | Delft: April 15, 1804 - Leiden

1797-1870) | Paris: April 15, 1797 - Riedisheim: July 21, 1870 | Daniel Dollfus-Ausset - Daniel Dollfus | Paris: April 15, 1797 - Riedisheim: July 21, 1870

American painter (1741–1827) | The Artist in His Museum | Chester: April 15, 1741 - Philadelphia: February 22, 1827 | Charles Willson Peale | Chester: April

chemist (1739-1809) | Steyr: April 15, 1739 - Pest: November 23, 1809 | József Jakab Winterl (Jozsef Jakab Winterl) | Steyr: April 15, 1739 - Pest: November 23, 1809

Italian polymath | Pomarolo: April 15, 1730 - Florence: March 9, 1805 | Felice Fontana | Pomarolo: April 15, 1730 - Florence: March 9, 1805

Scottish physician, chemist and agriculturalist; (1710-1790) | Fellow of the Royal Society | University of Glasgow, University of Edinburgh, Hamilton Academy

Swiss mathematician, physicist, and engineer (1707–1783) | Euler's formula, Euler's totient function, gamma function, Euler's theorem, Euler's identity

French philosopher and mystic | Metz: April 15, 1646 - Rijnsburg: May 21, 1719 | Pierre Poiret | Metz: April 15, 1646 - Rijnsburg: May 21, 1719

French cryptographer (1523-1596) | Saint-Pourçain-sur-Sioule: April 15, 1523 - Paris: February 19, 1596 | Blaise de Vigenère (Blaise de Vigenere | Graan)