Germinal Pierre Dandelin
Mathematician; Dandelin Spheres in Geometry
Born
Died
Category
Thinkers & Philosophers
Country
Belgium
Links & References
Contributed significantly to mathematics and engineering, particularly in the field of geometry. Developed the Dandelin spheres, which provide a geometrical proof of the relationship between conic sections and ellipses. Engaged in research involving the properties of geometric figures and their applications in engineering. Published works that influenced the understanding of conic sections and their properties.
Developed Dandelin spheres for conic sections
Published research in geometry and engineering
Other People Born on April 12th
Louis 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.
Continue ReadingLyman Hall
American physician and politician
Born
April 12th, 1724 302 years ago
Died
October 19th, 1790 235 years ago — 66 years old
Born in 1724, Hall served as a physician and clergyman. He represented Georgia in the Continental Congress and was one of the signers of the Declaration of Independence. He held the position of the 16th Governor of Georgia from 1783 to 1784. Hall played a significant role in the early governance of Georgia following its break from British rule, contributing to the establishment of the state as a key player in the formation of the United States.
Continue ReadingDavid Letterman
Television host and late-night comedian
Born
April 12th, 1947 79 years ago
A comedian and television host became a prominent figure in late-night television through the creation and hosting of 'The Late Show with David Letterman' on CBS. Beginning his career in the 1970s, he initially gained recognition with 'Late Night with David Letterman' on NBC. The show featured a mix of comedy sketches, celebrity interviews, and musical performances. Over the years, the unique style included unconventional stunts and a distinctive presence, contributing to the evolution of late-night formats.
Continue ReadingPeter Safar
Austrian physician and resuscitation pioneer
Born
April 12th, 1924 102 years ago
Died
August 2nd, 2003 23 years ago — 79 years old
Contributions to the field of medicine emphasized the importance of resuscitation techniques. Developed the concept of Basic Life Support, which has been integrated into CPR courses worldwide. Established the first intensive care unit and introduced innovative strategies for patient care. His work laid the foundation for modern cardiopulmonary resuscitation practices, significantly influencing emergency medicine protocols.
Continue ReadingArmen Alchian
Economist, created property rights theory
Born
April 12th, 1914 112 years ago
Died
February 19th, 2013 13 years ago — 98 years old
An economist and academic contributed significantly to the field of economics, particularly in the areas of property rights and the theory of the firm. A professor at the University of California, Los Angeles, focused on microeconomic theory and price theory. Co-authored the influential book 'Economic Forces at Work', which examined economic mechanisms and market processes. Additionally, established principles related to transactions, contracts, and the role of businesses within the economy.
Continue ReadingJazz Richards
Welsh international footballer
Born
April 12th, 1991 35 years ago
Professional footballer with a career spanning several seasons, primarily played as a defender. Competed for clubs such as Cardiff City, where significant contributions were made during Championship campaigns. Represented the Welsh national team in international competitions, showcasing skills at both club and national levels. Achieved recognition for performances in key matches.
Continue ReadingOther People Who Died on February 15th
Martha Gellhorn
Journalist and author, WWII correspondent
Born
November 8th, 1908 117 years ago
Died
February 15th, 1998 28 years ago — 89 years old
Worked as a journalist and author with a focus on war reporting. Covered World War II as a correspondent for Collier's Weekly, establishing a reputation for insightful and unflinching reporting. Authored several novels and works of nonfiction throughout a prolific career. Contributed to notable publications such as The New Republic and The Atlantic Monthly. Known for her strong humanitarian views and her advocacy for social justice issues.
Continue ReadingMinnie Maddern Fiske
American actress and playwright, 'The Laurel'
Born
December 19th, 1865 160 years ago
Died
February 15th, 1932 94 years ago — 66 years old
An influential American actress and playwright, contributed significantly to the staging of important works in American theater. Established a reputation for strong performances in the early 20th century. Played the title role in the successful production of 'The Laurel' and was instrumental in advancing the role of women in theater. Actively opposed the censorship of plays and fought for the rights of playwrights, creating a legacy that influenced future generations.
Continue ReadingP.J. O'Rourke
Humorist and journalist, wrote 'Parliament of Whores'
Born
1947 79 years ago
Died
February 15th, 2022 4 years ago — 75 years old
A prominent American author and humorist, contributed significantly to political commentary through satire. Wrote extensively for publications such as National Lampoon and The Weekly Standard. Authored books exploring political and social issues with a humorous lens, with 'Parliament of Whores' highlighting the absurdities of American politics. Worked as a foreign correspondent, offering insights into international affairs with a comedic twist. O'Rourke's style and perspective garnered a dedicated readership, making him a significant voice in contemporary humor.
Continue ReadingThelma Estrin
Computer Scientist and Engineer
Born
February 21st, 1924 102 years ago
Died
February 15th, 2014 12 years ago — 89 years old
A prominent computer scientist and engineer, contributions focused on medical applications of computing. Pioneered the development of medical computer systems and advanced techniques in biomedical engineering. Played a key role at the University of California, Los Angeles, and significantly influenced the field through research and innovation in health informatics.
Continue ReadingPat Sullivan
Animator and producer of Felix the Cat
Born
February 22nd, 1887 139 years ago
Died
February 15th, 1933 93 years ago — 45 years old
An Australian-American animator and producer, contributed significantly to early animation. Created the character Felix the Cat, one of the first cartoon stars. Established a successful studio in the 1920s focusing on animated shorts. Pioneered techniques that influenced the animation industry during the silent film era.
Continue ReadingStuart McLean
Canadian radio broadcaster and storyteller
Born
1948 78 years ago
Died
February 15th, 2017 9 years ago — 69 years old
A Canadian radio broadcaster and storyteller, contributed significantly to public radio through a long-running program featuring storytelling and music. Hosted 'The Vinyl Cafe' which aired for over two decades, showcasing humorous and heartfelt tales that resonated with audiences. The show became an integral part of Canadian culture, often featuring both fictional characters and real-life guests. McLean's work extended beyond broadcasting, including published books that compiled stories from the program, further establishing his voice in contemporary Canadian literature.
Continue Reading