Leonhard Euler
Mathematician and physicist, Euler's Formula
A prominent mathematician and physicist, contributions included advancements in calculus, graph theory, and topology. Introduced the concept of a mathematical function. Developed Euler's formula that establishes a profound connection between complex analysis and trigonometry. Published over 800 papers and books, making significant contributions to various fields of mathematics and mechanics. His work laid the groundwork for modern mathematics, influencing future generations of mathematicians and scientists.
Introduced Euler's formula in complex analysis
Developed foundational principles in calculus
Contributed to graph theory and topology
Other People Born on April 15th
Étienne Geoffroy Saint-Hilaire
French biologist and zoologist
Born
April 15th, 1772 253 years ago
Died
June 19th, 1844 181 years ago — 72 years old
A prominent figure in the field of biology, contributions included the development of a theory of morphological unity among animals. Pioneered the study of comparative anatomy and established connections among various species. A founding member of the Société Zoologique de France, significant engagements included work on the classification of organisms and the impact of environment on biological development. Collaborated with notable contemporaries in scientific advancements.
Continue ReadingAngelo DiGeorge
American endocrinologist and physician
Born
April 15th, 1921 104 years ago
Died
October 11th, 2009 16 years ago — 88 years old
An American physician and endocrinologist, contributed significantly to the understanding of genetic disorders related to the immune system. Focused on the DiGeorge syndrome, a condition characterized by a range of birth defects, including heart defects, poor immune function, and specific facial features. Worked on developing treatment protocols for affected individuals, enhancing the quality of life for patients. Conducted research that paved the way for a better understanding of genetic influences on health.
Continue ReadingArturo Gatti
Boxer and three-time world champion
Born
April 15th, 1972 53 years ago
Died
July 11th, 2009 16 years ago — 37 years old
Born in Italy and later moving to Canada, a professional boxer competed primarily in the junior welterweight and welterweight divisions. Gatti held the WBC, IBF, and WBA titles during the career, which spanned from 1991 to 2007. Famed for his exceptional fighting skills, grit, and tenacity inside the ring, each bout further solidified his reputation as an exciting competitor in the sport. Gatti's notable fights included memorable bouts against Micky Ward, creating a legendary trilogy that showcased their intense rivalry and Gatti's remarkable perseverance. After retiring, he also contributed to boxing through coaching and mentoring future fighters.
Continue ReadingPercy Shaw
Inventor of the cat's eye
Born
April 15th, 1890 135 years ago
Died
1976 50 years ago — 86 years old
An English businessman developed a reflective road safety device that improved visibility for drivers at night. The device, called the cat's eye, consisted of a pair of reflective lenses mounted in a rubber housing. This invention increased road safety and gained widespread adoption in the UK and beyond. Originally patented in the 1930s, the cat's eye significantly reduced accidents by enhancing lane visibility during low-light conditions. Shaw's company continued to produce cat's eyes for decades.
Continue ReadingPenelope Coelen
South African beauty queen and actress
Born
April 15th, 1940 85 years ago
Born in 1940, a South African actress and model achieved fame as Miss World 1958. The title marked a significant moment in beauty pageant history. Contributed to the entertainment industry with appearances in various film and television projects. Coelen's success in the pageant circuit and modeling opened doors for her in acting. The Miss World title brought recognition and enhanced her career.
Continue ReadingGeorgy Beregovoy
General and astronaut, Soyuz 3 commander
Born
April 15th, 1921 104 years ago
Died
June 30th, 1995 30 years ago — 74 years old
A Ukrainian-Russian general and pilot achieved the rank of major general in the Soviet Air Force. Initially trained as a pilot during World War II, worked as a test pilot post-war. In 1968, commanded the Soyuz 3 mission, successfully docking with the Salyut 1 space station. Over the course of the career, participated in various military and space exploration efforts, gaining recognition for contributions to aerospace advancements. Received multiple awards, including the title of Hero of the Soviet Union.
Continue ReadingOther People Who Died on September 18th
Robert G. Cole
American colonel, Medal of Honor recipient
Born
March 19th, 1915 110 years ago
Died
September 18th, 1944 81 years ago — 29 years old
Served as a Colonel in the United States Army during World War II. Participated in the Battle of the Bulge and played a significant role in the defense of American troops. Awarded the Medal of Honor for gallantry in action during Operation Market Garden in 1944, specifically for actions at the bridge near the town of Arnhem, Netherlands. Contributed to military strategy and leadership before his death in 1944.
Continue ReadingRuth Bader Ginsburg
U.S. Supreme Court Justice
Born
March 15th, 1933 92 years ago
Died
September 18th, 2020 5 years ago — 87 years old
Graduated from Columbia Law School and began a legal career focused on gender equality. Co-founded the Women’s Rights Project at the ACLU, arguing several groundbreaking cases that advanced women’s rights. Appointed to the U.S. Supreme Court in 1993, serving as a strong advocate for civil liberties and gender equality. Continued to influence legal discussions until her passing in 2020.
Continue ReadingGeorge MacDonald
Scottish author and poet of fantasy tales
Born
December 10th, 1824 201 years ago
Died
September 18th, 1905 120 years ago — 80 years old
A Scottish minister and writer specializing in children's literature, focused on fantasy and fairy tales. Significant contributions include the creation of the genre alongside contemporaries such as Lewis Carroll and J.M. Barrie. Wrote notable works such as 'At the Back of the North Wind' and 'Phantastes', which influenced subsequent writers like C.S. Lewis. Engaged with themes of imagination and spiritual growth through storytelling, maintaining a firm connection to Christian values in his narratives.
Continue ReadingVolin
Anarchist intellectual from Russia
Born
August 23rd, 1882 143 years ago
Died
September 18th, 1945 80 years ago — 63 years old
An influential anarchist intellectual engaged in revolutionary politics in early 20th-century Russia. Participated in the Russian Revolution, advocating for a form of anarchism that emphasized worker's self-management and autonomy. Contributed significantly to anarchist literature and theory, particularly through the publication of 'La Révolte' and 'The Unknown Revolution'. His writings articulated a vision of a stateless society rooted in voluntary cooperation and direct democracy. After the revolution, faced persecution and fled to Western Europe, where continued advocacy for anarchist principles took place.
Continue ReadingFranchot Tone
American actor in 'Mutiny on the Bounty'
Born
February 27th, 1905 120 years ago
Died
September 18th, 1968 57 years ago — 63 years old
Born in 1905, an American actor and producer gained recognition in Hollywood during the 1930s and 1940s. Featured in films such as 'Mutiny on the Bounty' and 'The Lives of a Bengal Lancer', showcased versatility in both dramatic and comedic roles. In addition to films, worked in television and theater throughout a prolific career. Also involved in producing and contributed to various productions.
Continue ReadingPyotr Stolypin
Russian politician and Prime Minister
Born
1862 164 years ago
Died
September 18th, 1911 114 years ago — 49 years old
Served as the 3rd Prime Minister of Russia from 1906 until assassination in 1911. Focused on agrarian reform and modernization of the Russian economy. Promoted landownership among peasants to encourage agricultural productivity. Implemented policies to stabilize the Russian Empire during turbulent times.
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