Georges-Louis Leclerc, Comte de Buffon

popular name: Camille Flammarion

date_of_death: June 3, 1925

age: 83

cause_of_death: Natural causes

claim_to_fame: Science

best_know_for: Camille Flammarion was a famous French astronomer, author, magazine publisher and notable psychical researcher. He was a prolific author of more than fifty titles, including popular science works about astronomy, several notable early science fiction novels, and works on psychical research and related topics. He also published the magazine L'Astronomie, starting in 1882. He maintained a private observatory at his home in Juvisy-sur-Orge, France which is open to the public today.

popular name: John von Neumann

date_of_death: February 8, 1957

age: 53

cause_of_death: Bone cancer (disputed)

claim_to_fame: Science

best_know_for: John von Neumann was a Hungarian-American mathematician, physicist, computer scientist, engineer and polymath. Von Neumann was regarded as perhaps the mathematician with the widest coverage of the subject in his time and was said to have been "the last representative of the great mathematicians who were equally at home in pure and applied mathematics". Von Neumann's academic career was filled with awards and honors. He was a Member of the American Academy of Arts and Sciences; Academiz Nacional de Ciencias Exactas, Peru; Acamedia Nazionale dei Lincei, Italy; National Academy of Sciences; Royal Netherlands Academy of Sciences and Letters; Information Processing Hall of Fame; and held numerous honorary degrees. Described as the scientific genius who pioneered the modern computer, game theory, nuclear deterrence, and more, John von Neumann illuminated the fields of pure and applied mathematics, computer science, physics, and economics. In the end, it would be supremely difficult to effectively refute the claim that John von Neumann is likely the most intelligent person who has ever lived. By the time of his death in 1957 at the modest age of 53, the Hungarian polymath had not only revolutionized several subfields of mathematics and physics but also made foundational contributions to pure economics and statistics and taken key parts in the invention of the atomic bomb, nuclear energy and digital computing.

popular name: Charles Pigeon

date_of_death: March 18, 1915

age: 76

cause_of_death: Natural causes

claim_to_fame: Science

best_know_for: Charles-Joseph Pigeon started as a salesman in department store Le Bon Marché in Paris, where he became a close friend of Ernest Cognacq. Together they became partners and co-founders of the Samaritaine department stores. Pigeon became a dealer in cycle lamps, mining lamps and other combustible lamps. On June 9, 1884 he obtained a patent for his new lamp, the Pigeon lamp, a non-exploding gasoline lamp. He began to design, manufacture and sell his new invention across Europe and later that year he exhibited his Pigeon Lamps at the Exposition universelle de 1900 which subsequently made him famous and very, very wealthy. Upon his death, he was laid to rest at Cimetière du Montparnasse in Paris, France.