John Landen
Mathematician known for Landen's theorem
An English mathematician and theorist, contributed significantly to the fields of mathematics and geometry. Formulated Landen's theorem, which concerns the transformation of integrals. Worked on various mathematical topics including the theory of elliptic integrals and the evaluation of logarithmic functions. Authored several papers that influenced later developments in mathematical analysis.
Formulated Landen's theorem
Contributed to the theory of elliptic integrals
Published key papers in mathematical analysis
Other People Born on January 23rd
Irving Saladino
Long jumper, Olympic gold medalist
Born
January 23rd, 1983 43 years ago
Competed in long jump and achieved significant success in international athletics. Won the gold medal at the 2008 Beijing Olympics, marking a historic moment for Panama in track and field. Set a personal best jump of 8.73 meters during the 2007 World Championships in Athletics, securing a gold medal at that event. Earned several medals in Central American and Caribbean Games, contributing to the development of track and field in Panama.
Continue ReadingJeff Samardzija
Baseball pitcher and former football player
Born
January 23rd, 1985 41 years ago
Played professional baseball as a pitcher for the Chicago Cubs, Oakland Athletics, Chicago White Sox, and San Francisco Giants. Achieved success in college football as a wide receiver for the University of Notre Dame. Transitioned to a career in Major League Baseball after a notable collegiate athletic career, earning accolades in both sports.
Continue ReadingErnst Abbe
German physicist and engineer; optics pioneer
Born
January 23rd, 1840 186 years ago
Died
January 14th, 1905 121 years ago — 64 years old
Contributed significantly to the field of optics and microscopy. Worked closely with Carl Zeiss to develop high-quality optical instruments. Formulated the Abbe Sine Condition, which describes the conditions for achieving optimal resolution in microscopes. Played a crucial role in the establishment of the Carl Zeiss AG company, transforming it into a leading manufacturer of optical products. Advocated for the rights of workers and contributed to social reforms in Jena, Germany.
Continue ReadingOlga Danilović
Serbian tennis player and tournament champion
Born
January 23rd, 2001 25 years ago
Competitions on the WTA Tour marked the career. Secured the title at the 2017 Australian Open in the girls' singles category. Achieved a career-high singles ranking of No. 74 in February 2020. Participated in professional events, demonstrating skills in both singles and doubles formats. Represented Serbia in several international competitions.
Continue ReadingStendhal
French novelist, wrote 'The Red and the Black'
Born
January 23rd, 1783 243 years ago
Died
March 23rd, 1842 183 years ago — 59 years old
A significant figure in French literature, contributed to the development of the novel in the early 19th century. Achieved recognition for works that explored the complexities of human psychology and society. 'The Red and the Black' presented a detailed portrait of social rise and ambition within post-Napoleonic France. Also authored 'The Charterhouse of Parma', noted for its intricate narrative and character development. Stendhal's writing style incorporated elements of realism and romanticism, influencing numerous later writers.
Continue ReadingDoutzen Kroes
Model and actress in major campaigns
Born
January 23rd, 1985 41 years ago
Born in 1985, this individual began a modeling career after being discovered at the age of 18. Achievements include modeling for Victoria's Secret and serving as a spokesmodel for L'Oréal Paris. Transitioned into acting, appearing in the film 'Nova Zembla'. Participated in various charity initiatives throughout career, focusing on children's welfare and health.
Continue ReadingOther People Who Died on January 15th
Frank Clement
Race Car Driver with a Grand Prix win
Born
June 15th, 1886 139 years ago
Died
January 15th, 1970 56 years ago — 83 years old
Acclaimed as a prominent figure in British motor racing during the mid-20th century. Competed in various endurance races, most notably, achieved success in the 1950s. Distinguished himself in the 1952 British Grand Prix, securing victory and showcasing exceptional driving skills. Participated in multiple major racing events, attracting attention for both speed and technique. Remained active in the racing community until the late 1960s, contributing to the sport's growth and popularity. Died in January 1970.
Continue ReadingDolores O'Riordan
Irish pop singer and The Cranberries lead
Born
September 6th, 1971 54 years ago
Died
January 15th, 2018 8 years ago — 46 years old
An influential Irish pop singer achieved prominence as the lead vocalist of the band The Cranberries. The group gained international fame in the 1990s with hit songs such as 'Zombie' and 'Linger'. O'Riordan's distinctive voice and emotive songwriting contributed to the band's success, making them a significant presence in the alternative rock music scene. Beyond her work with The Cranberries, she also released solo albums, showcasing her versatility and artistic growth. The band reunited several times over the years, continuing to tour and release new music. O'Riordan's career was marked by both commercial success and critical acclaim until her untimely passing in 2018.
Continue ReadingAnton Bernolák
Slovak linguist and priest
Born
October 1st, 1762 263 years ago
Died
January 15th, 1813 213 years ago — 50 years old
A prominent Slovak linguist and priest, contributed significantly to the development of the Slovak language. Created the first standardized Slovak language system, known as the Bernolák syntax, published in 1787. His work laid the foundation for future Slovak linguistic studies and education. Actively engaged in priesthood, promoting education and culture within the Slovak community during a time of national awakening in the region.
Continue ReadingRosa Luxemburg
German economist and revolutionary theorist
Born
March 5th, 1871 154 years ago
Died
January 15th, 1919 107 years ago — 47 years old
An economist, philosopher, and revolutionary socialist associated with the German Social Democratic Party, contributed to Marxist theory and critiqued capitalist systems. Advocated for the self-emancipation of the working class and opposed military imperialism during World War I. Played a significant role in founding the Spartacus League, which later became the Communist Party of Germany. Following her assassination in 1919, her writings continued to influence leftist movements.
Continue ReadingJunior Wells
American blues singer and harmonica player
Born
December 9th, 1934 91 years ago
Died
January 15th, 1998 28 years ago — 63 years old
A prominent figure in the Chicago blues scene, this artist gained recognition for vibrant performances and a unique vocal style. Wells started recording in the late 1950s and collaborated with various musicians throughout his career. Notable works include the influential album 'Hoodoo Man Blues,' which is regarded as a classic in the blues genre. His ability to blend vocal and harmonica performances set him apart and influenced many blues artists.
Continue ReadingJohn Cosin
English bishop and academic leader
Born
November 30th, 1594 431 years ago
Died
January 15th, 1672 354 years ago — 77 years old
An influential English bishop and academic, he served as the Bishop of Durham from 1660 until death in 1672. Education at Trinity College, Cambridge, followed by a focus on theological writings and ecclesiastical reform, marked his academic endeavors. He played a significant role in promoting the Anglican Church's interests during the Restoration period, advocating for the Church's more moderate practices. His contributions extended to architecture, where he commissioned the rebuilding of Durham Cathedral and other churches, leaving a lasting legacy in English ecclesiastical architecture. He also engaged in the political and social issues of his time, navigating the complexities of the English Civil War and its aftermath.
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