Léon Foucault
French physicist known for pendulum experiment
Contributed significantly to experimental physics and is recognized for the invention of the Foucault pendulum, demonstrating the Earth's rotation. Conducted experiments in optics, notably measuring the speed of light with an accuracy that improved upon previous efforts. Served as a professor at the Collège de France, influencing the academic landscape of physics in the 19th century.
Invention of the Foucault pendulum
Measurement of the speed of light
Contributions to gyroscopy
Other People Born on September 18th
Pope Gregory XVI
Pope with papal bull on slavery
Born
September 18th, 1765 261 years ago
Died
June 1st, 1846 180 years ago — 80 years old
Served as Pope from 1831 until death in 1846. Issued the encyclical 'In supremo apostolatus' which condemned the slave trade and slavery itself. Advocated for the preservation of the Papal States and opposed liberal reforms. Strengthened the Congregation of the Index to curtail modernist thought and censorship of publications. Worked on restoring the Catholic Church's authority in regions where church influence had diminished.
Continue ReadingAdrien-Marie Legendre
French mathematician and theorist
Born
September 18th, 1752 274 years ago
Died
January 9th, 1833 193 years ago — 80 years old
Contributed significantly to mathematics, particularly in number theory and statistics. Developed Legendre polynomials and introduced the method of least squares. His work in number theory included the formulation of Legendre's conjecture concerning prime numbers. Authored influential texts on analysis and number theory, which became standard references in mathematics.
Continue ReadingHenry Wittenberg
American wrestler and Olympic champion
Born
September 18th, 1918 108 years ago
Died
March 9th, 2010 16 years ago — 91 years old
A prominent figure in American wrestling, this individual won a gold medal in freestyle wrestling at the 1948 London Olympics. Throughout his career, he competed at a high level and earned recognition for his outstanding skills on the mat. After retiring from competitive wrestling, he transitioned into coaching, helping to train future generations of wrestlers. His influence extended into educational institutions where he taught and mentored young athletes.
Continue ReadingClark Wissler
American anthropologist and author
Born
September 18th, 1870 156 years ago
Died
1947 79 years ago — 77 years old
An anthropologist and educator focused on North American indigenous cultures. Contributed significantly to the understanding of cultural areas and the social organization of Native American tribes. Published influential works including 'The American Indian' and 'The Relation of Culture to Personality'. Worked at the American Museum of Natural History and was involved in various educational and research activities.
Continue ReadingJoseph Story
American jurist and Supreme Court justice
Born
September 18th, 1779 247 years ago
Died
1845 181 years ago — 66 years old
A prominent lawyer and jurist, contributed significantly to American law through various legal opinions and teachings. Served as an Associate Justice of the Supreme Court from 1811 to 1845, participating in key decisions that shaped constitutional law. Authored several important legal texts, which became fundamental references in American legal education. Also held a position as a professor at Harvard Law School, influencing the development of legal scholarship and practices.
Continue ReadingRichard With
Norwegian captain and founder of Hurtigruten
Born
September 18th, 1846 180 years ago
Died
February 9th, 1930 96 years ago — 83 years old
Founded the coastal shipping service Hurtigruten, which became essential for transport along Norway's coastline. Held the position of captain and instrumental in the development of maritime logistics in Norway. The service began operations in 1893 and significantly improved connection between remote coastal communities and urban areas. Played a key role in promoting tourism and commerce in Norway.
Continue ReadingOther People Who Died on February 11th
Ken Fletcher
Australian tennis player with doubles titles
Born
1940 86 years ago
Died
February 11th, 2006 20 years ago — 66 years old
Achieved significant success in tennis, particularly in men's doubles competitions. Won the Australian Open men's doubles title in 1965 alongside his partner. Competed in various Grand Slams, showcasing talent on both grass and hard courts. Contributed to the sport in various capacities after retirement, including coaching and mentoring younger players.
Continue ReadingMilan I of Serbia
King of Serbia, established monarchy
Born
August 22nd, 1854 172 years ago
Died
February 11th, 1901 125 years ago — 46 years old
Became the first King of Serbia in 1882 after serving as Prince. Led Serbia during the Serbian-Turkish War and expanded territories, achieving significant victories. His reign was marked by modernization and centralization of the state. Abdicated in 1889 amid political challenges and personal conflicts. Lived in exile until his death in 1901.
Continue ReadingPietro Cataldi
Italian mathematician and astronomer
Born
April 15th, 1552 474 years ago
Died
February 11th, 1626 400 years ago — 73 years old
Contributed to mathematics and astronomy during the Renaissance. Developed the theory of proportionality and made advancements in astronomical calculations. Emphasized the importance of geometrical principles in mathematical study. Published significant works that influenced later scholars in the field of mathematics.
Continue ReadingTito Canepa
Dominican-American painter
Born
1916 110 years ago
Died
February 11th, 2014 12 years ago — 98 years old
Born in the Dominican Republic, significant contributions were made to the art world after relocating to the United States. Canepa specialized in vibrant, colorful paintings that often drew on cultural themes and personal experiences. His work reflects the fusion of Caribbean and American influences. Active in various galleries, participated in numerous exhibitions showcasing his artwork. Canepa's work is often celebrated for its unique style and emotional depth, making a lasting impression in the art community.
Continue ReadingPope Paschal I
Pope and religious leader, overseer of Rome
Died
February 11th, 824 1202 years ago — None years old
Reigned as pope from 817 to 824, overseeing the Roman Catholic Church during a period of significant consolidation and influence. Emphasized the importance of the veneration of relics and promoted the construction of churches dedicated to martyrs. Strongly advocated for the Christianization of the Iberian Peninsula. Played a pivotal role in relations with the Frankish Empire, particularly through engagements with Emperor Louis the Pious. Strengthened the papacy's authority and legacy in the medieval Christian world.
Continue ReadingLouis Beel
Dutch politician and Prime Minister
Born
April 12th, 1902 124 years ago
Died
February 11th, 1977 49 years ago — 74 years old
Served as Prime Minister of the Netherlands from 1958 to 1963. Held various positions within the government, including Minister of Education, Arts, and Sciences. Actively participated in the development of Dutch education policy during his tenure. Contributed to post-war reconstruction efforts in the Netherlands.
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