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Harrison Brown and the Isolation of Plutonium

Harrison Brown and the Isolation of Plutonium

On September 26, 1916, American nuclear chemist and geochemist Harrison Scott Brown was born. Brown is generally known for his role in isolating plutonium for its use in the first atomic bombs and for his studies regarding meteorites and the Earth’s origin. He also was a political activist, who lectured and wrote on the issues of arms limitation, natural resources and world hunger. Harrison Brown was born in Sheridan, Wyoming,…
Severo Ochoa and the Biological Systhesis of RNA and DNA

Severo Ochoa and the Biological Systhesis of RNA and DNA

On September 24, 1905, Spanish physicist and biochemist Severo Ochoa de Albornoz was born. Ochoa received the 1959 Nobel Prize in Physiology or Medicine together with Arthur Kornberg for their discovery of the mechanisms in the biological synthesis of ribonucleic acid and deoxyribonucleic acid. Severo Ochoa was born in Luarca (Asturias), Spain, to Severo Manuel Ochoa, a lawyer and businessman, and his mother Carmen de Albornoz. Ochoa was the nephew…
George Stapledon and Grassland Science

George Stapledon and Grassland Science

On September 22, 1882, English grassland scientist and pioneer environmentalist Sir Reginald George Stapledon was born. Stapledon worked to compensate for the land use changes of the 20th century, after the collapse of rural mining industries of 18th and 19th centuries and resultant depopulation. Reginald George Stapledon was born at Lakenham, Northam, near Bideford, Devon, UK, the sixth of the seven children of shipping agent William Stapledon and Mary Clibbert.…
Sir Richard John Griffith and the Geological Map of Ireland

Sir Richard John Griffith and the Geological Map of Ireland

On September 20, 1784, Irish geologist and mining engineer Sir Richard John Griffith was born. Griffith sometimes has been called the “father of Irish geology.” He completed the first complete geological map of Ireland and was author of the valuation of Ireland – known ever since as Griffith‘s Valuation. Richard John Griffith was born in Hume Street, Dublin, Ireland, the son of Richard Griffith M.P. of Millicent House and Charity…
Clark Wissler and the Normative Aspect of Culture

Clark Wissler and the Normative Aspect of Culture

On September 18, 1870, American anthropologist Clark David Wissler was born. Wissler devised the age-area concept which held that the age of cultural traits could be found by correlating the diffusion of those traits throughout their associated area. He was the first anthropologist to perceive the normative aspect of culture, to define it as learned behavior, and to describe it as a complex of ideas, all characteristics of culture that…
Albert Szent-Györgyi and Vitamin C

Albert Szent-Györgyi and Vitamin C

On September 1893, Hungarian biochemist and Nobel laureate Albert Szent-Györgyi was born. Albert Szent-Györgyi is credited with discovering vitamin C and the components and reactions of the citric acid cycle. “Discovery consists of looking at the same thing as everyone else and thinking something different.” Attributed to Szent-Györgyi in: IEEE (1985) Bridging the present and the future: IEEE Professional Communication Society conference record, Williamsburg, Virginia, October 16-18, 1985. p. 14.…
Ivan Matveevich Vinogradov and the Goldbach Conjecture

Ivan Matveevich Vinogradov and the Goldbach Conjecture

On September 14, 1891, Soviet mathematician Ivan Matveevich Vinogradov was born. Vinogradov is best known for his contributions to the analytical theory of numbers, including a partial solution of the Goldbach conjecture proving that every sufficiently large odd integer can be expressed as the sum of three odd primes. Ivan Matveevich Vinogradov was born to Matvei Avraam’evich Vinogradov, a priest in Milolyub, a village in the Velikie Luki district of…
Richard March Hoe and the Rotary Printing Press

Richard March Hoe and the Rotary Printing Press

On September 12, 1812, American inventor Richard March Hoe was born. Hoe designed a rotary printing press and related advancements, including the “Hoe web perfecting press” in 1871, which used a continuous roll of paper and revolutionized newspaper publishing. Richard March Hoe was born in New York City, the son of Robert Hoe, an English-born American mechanic from Leicestershire, who with brothers-in-law Peter and Matthew Smith had established a steam-powered manufactory…
James Keeler and the Rings of Saturn

James Keeler and the Rings of Saturn

On September 10, 1857, American astronomer James Edward Keeler was born. Keeler is best known for being the astronomer who confirmed James Clerk Maxwell‘s theory that the rings of Saturn were not solid (requiring uniform rotation), but composed of meteoric particles. James Edward Keeler was born in La Salle, Illinois, to William F. Keeler, who served as a paymaster in the U.S. Navy at the time of the American Civil…
Paul Gerson Unna and Dermatopathology

Paul Gerson Unna and Dermatopathology

On September 8, 1850, German dermatologist Paul Gerson Unna was born. Unna soon specialized in dermatology and became one of the pioneers in dermatopathology. He became known internationally in his field after writing a book on Histopathology of Skin Diseases (1884), which became a classic work. His name is also remembered for the Unna-Pappenheim stain, the most common stain for blood smears. Paul Unna was born in Hamburg, the son…
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