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Harald Sack

engineering
Gaspard de Prony and the Prony Brake

Gaspard de Prony and the Prony Brake

Harald Sack
On July 22, 1755, French mathematician and hydraulic engineer Gaspard Clair François Marie Riche de Prony was born. De Prony is best known for his efforts in the mechanization of calculations as well as for his invention of the eponymous “brake” to measure the performance of machines and engines. Mathematics vs a Legal Career Gaspard de Prony’s family name was Riche, the de Prony title having been bought by his parents. De…
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explorer
Sir Edmund Hillary – Mountaineer, Explorer and Philanthropist

Sir Edmund Hillary – Mountaineer, Explorer and Philanthropist

Harald Sack
On July 20, 1919, New Zealand mountaineer, explorer, and philanthropist Sir Edmund Percival “Ed” Hillary was born. Hillary and Nepalese Sherpa mountaineer Tenzing Norgay became the first climbers confirmed to have reached the summit of Mount Everest. As part of the Commonwealth Trans-Antarctic Expedition he reached the South Pole overland in 1958. He subsequently reached the North Pole, making him the first person to reach both poles and summit Everest. Following his…
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space
John Glenn – The First American to orbit the Earth

John Glenn – The First American to orbit the Earth

Harald Sack
On July 18, 1921, U.S. astronaut and statesman John Herschel Glenn Jr. was born. In 1962 Glenn was the first American to orbit the Earth, circling it three times. Before joining NASA, Glenn was a distinguished fighter pilot in World War II and Korea. In 1998, still a sitting senator, Glenn was the oldest person to fly in space as a crew member of the Discovery space shuttle and the only person…
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medical science
Joseph Goldberger’s Fight against Pellagra

Joseph Goldberger’s Fight against Pellagra

Harald Sack
On July 16, 1874, American physician and epidemiologist Joseph Goldberger was born. Goldberger was an advocate for scientific and social recognition of the links between poverty and disease. Due to his important work on the link between pellagra and poor diet, he was nominated five times for the Nobel Prize. A Hungarian Emigrant Joseph Goldberger was born in Girált, Sáros County, Kingdom of Hungary in a Jewish family, as the youngest of…
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computer games
Jay Wright Forrester and System Dynamics

Jay Wright Forrester and System Dynamics

Harald Sack
On July 14, 1918, pioneering American computer engineer and systems scientist Jay Wright Forrester was born. Forrester is known as the founder of system dynamics, which deals with the simulation of interactions between objects in dynamic systems. He also he supervised the building of the Whirlwind computer at the Massachusetts Institute of Technology, for which he invented the random-access magnetic core memory, the information-storage device employed in most digital computers. “In concept…
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biology
Albert Calmette and the Antituberculosis Vaccine

Albert Calmette and the Antituberculosis Vaccine

Harald Sack
On July 12, 1863, French physician, bacteriologist and immunologist Léon Charles Albert Calmette was born. Calmette discovered the Bacillus Calmette-Guérin, an attenuated form of Mycobacterium bovis used in the BCG vaccine against tuberculosis. He also developed the first antivenom for snake venom, the Calmette‘s serum. From Naval Medical Corps to Institute Louis Pasteur Calmette was born in Nice, France. He wanted to serve in the Navy and be a physician, so in 1881…
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archeology
Karl Richard Lepsius – A Pioneer in Modern Archaeology

Karl Richard Lepsius – A Pioneer in Modern Archaeology

Harald Sack
On July 10 1884, Prussian egyptologist and linguist Karl Richard Lepsius passed away. Lepsius is regarded as one of the founding fathers of scientific methods in archaeology. His plans, maps and drawings of tomb and temple walls are of high accuracy and reliability. In 1866 he found found the Canopus decree at Tanis. Being written in two languages, it was a valuable cross-reference for the prior interpretation of the Rosetta stone by Champollion.[6]…
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psychology
Elisabeth Kübler-Ross and her Research in Death

Elisabeth Kübler-Ross and her Research in Death

Harald Sack
On July 8, 1926, Swiss-American psychiatrist Elisabeth Kübler-Ross was born. Kübler-Ross was a pioneer in near-death studies and the author of the groundbreaking book On Death and Dying (1969), where she first discussed her theory of the five stages of grief. “I believe that we are solely responsible for our choices, and we have to accept the consequences of every deed, word, and thought throughout our lifetime.” – Elisabeth Kübler-Ross [1] Youth…
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mathematics
Jordan Carson Mark and the Development of Thermonuclear Weapons

Jordan Carson Mark and the Development of Thermonuclear Weapons

Harald Sack
On July 6, 1913, Canadian mathematician Jordan Carson Mark was born. Mark is best known for his work on developing nuclear weapons for the United States at the Los Alamos National Laboratory. He oversaw the development of new weapons, including the hydrogen bomb in the 1950s. On the hydrogen bomb project he was able to bring together experts like Edward Teller, Stanislaw Ulam and Marshall Holloway despite their personal differences. Jordan Carson…
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geography
Sir George Everest and his Trigonometric Survey of India

Sir George Everest and his Trigonometric Survey of India

Harald Sack
On July 4, 1790, Welsh military engineer and geodesist Sir George Everest was born. Everest was the Surveyor General of India from 1830 through 1843, providing the accurate mapping of the subcontinent. For more than twenty-five years and despite numerous hardships, he surveyed the longest arc of the meridian ever accomplished at the time. In 1865, Mount Everest was named in his honour in the English language, despite his objections, by the…
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