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Wladimir Köppen and the Köppen Climate Classification System

Wladimir Köppen and the Köppen Climate Classification System

On September 25, 1846, Russian-German geographer, meteorologist, climatologist and botanist Wladimir Peter Köppen was born. His most notable contribution to science was the development of the Köppen climate classification system, which, with some modifications, is still commonly used. Köppen made significant contributions to several branches of science. Wladimir Köppen studied botany at…
Eugen Sänger and Rocket Propulsion Engineering

Eugen Sänger and Rocket Propulsion Engineering

On September 22, 1905, Austrian rocket propulsion engineer Eugen Sänger was born. Sänger is best known for his contributions to lifting body and ramjet technology. Sänger also perfected a “regeneratively cooled” liquid-fueled rocket engine that used its own fuel, circulating around the combustion chamber, to control engine temperatures. Eugen Sänger studied civil…
Donald Glaser and the Bubble Chamber

Donald Glaser and the Bubble Chamber

On September 21, 1926, American physicist, neurobiologist and Nobel Laureate Donald Arthur Glaser was born. Glaser was awarded the 1960 Nobel Prize in Physics for his invention of the bubble chamber used in subatomic particle physics. Donald Glaser received his Bachelor of Science degree in physics and mathematics from the Case School…
Theodor Fontane and German Realism

Theodor Fontane and German Realism

On September 20, 1898, German novelist and poet Theodor Fontane passed away. Fontane is regarded by many as the most important 19th-century German-language realist writer. Theodor Fontane was born in Neuruppin, a town 30 miles northwest of Berlin, into a Huguenot family as son of the pharmacist Louis Henri Fontane.…
Chester Carlson and Xerography

Chester Carlson and Xerography

On September 19, 1968, American physicist, inventor, and patent attorney Chester F. Carlson passed away. He is best known for having invented the process of electrophotography, which produced a dry copy rather than a wet copy, as was produced by the mimeograph process. Carlson’s process was subsequently renamed xerography, a…
Edwin McMillan and Neptunium

Edwin McMillan and Neptunium

On September 18, 1907, American physicist and Nobel Laureate Edwin Mattison McMillan was born. McMillan is credited with being the first ever to produce a transuranium element, neptunium. For this, he shared the Nobel Prize in Chemistry with Glenn Seaborg in 1951. Edwin McMillan entered the California Institute of Technology…
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