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: Ludwig Boltzmann

date_of_death: September 5, 1906

age: 62

cause_of_death: Suicide - hanging

claim_to_fame: Science

best_know_for: Ludwig Boltzmann was one of the greatest theoretical physicists of all time. His fame is due to his pioneering research work on thermodynamics and statistical mechanics (his basic equation of kinetic gas theory and the second principle of thermodynamics) as well as the atomic hypothesis of matter. He also made important contributions in mechanics, electromagnetism, mathematics and philosophy. Boltzmann was an extraordinary mathematician, a philosopher, a great teacher (he had an outstanding memory), he was a brilliant conversationalist as well as an excellent pianist with a great passion for Beethoven. And yet he was a controversial figure and his innovative ideas (on atomism and irreversibility in particular) were often misunderstood and ostracized. In particular, his love of extreme mathematics earned him the by-name of "algebraic terrorist". Only a few years after his suicide that Jean Baptiste Perrin’s experimental verification of Brownian motion would settle the century-long debate about the atomic theory and thereby validate Boltzmann’s career.

popular name: Eugene Wigner

date_of_death: January 1, 1995

age: 92

cause_of_death: Pneumonia

claim_to_fame: Science

best_know_for: Eugene Paul "E. P." Wigner was a Hungarian theoretical physicist who also contributed to mathematical physics. He obtained American citizenship in 1937, and received the Nobel Prize in Physics in 1963 "for his contributions to the theory of the atomic nucleus and the elementary particles, particularly through the discovery and application of fundamental symmetry principles". Wigner and Hermann Weyl were responsible for introducing group theory into physics, particularly the theory of symmetry in physics. Along the way he performed ground-breaking work in pure mathematics, in which he authored a number of mathematical theorems. In particular, Wigner's theorem is a cornerstone in the mathematical formulation of quantum mechanics.