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physics
Jean Baptiste Perrin and the Brownian Motion

Jean Baptiste Perrin and the Brownian Motion

Tabea Tietz
On September 30, 1870, French physicist Jean Baptiste Perrin was born. In his studies of the Brownian motion of minute particles suspended in liquids, Perrin verified Albert Einstein’s explanation of this phenomenon and thereby confirmed the atomic nature of matter. Jean Baptiste Perrin – Biographical Background Jean Baptiste Perrin was born in Lille, France, while his father, Captain Jean Baptiste Perrin, wounded at the battle of Saint-Privat, was locked up in Metz…
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medical science
Michael Servetus and the Pulmonary Circulation

Michael Servetus and the Pulmonary Circulation

Tabea Tietz
Around September 29, 1509 (or 1511), Spanish theologian, physician, cartographer, and Renaissance humanist Michael Servetus was born. Servetus was a polymath versed in many sciences: mathematics, astronomy and meteorology, geography, human anatomy, medicine and pharmacology, as well as jurisprudence, translation, poetry and the scholarly study of the Bible in its original languages. He was probably the first European to correctly describe the function of pulmonary circulation. “Michael Servetus, alone, but trusting in Christ’s most sure protection.”…
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archeology
Edward Herbert Thompson and the Cenote Sagrado

Edward Herbert Thompson and the Cenote Sagrado

Tabea Tietz
On September 28, 1857, American archaeologist and diplomat Edward Herbert Thompson was born. Thompson is most famous for dredging the Cenote Sagrado (Sacred Cenote) in Chichen Itza from 1904 to 1910, where he recovered artifacts of gold, copper and carved jade, as well as the first-ever examples of what were believed to be pre-Columbian Maya cloth and wooden weapons. Edward Herbert Thompson – Early Years Edward Herbert Thompson was born in Worcester, Massachussetts,…
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astronomy
Sir Martin Ryle’s Breakthrough in Radio Astronomy with Aperture Synthesis

Sir Martin Ryle’s Breakthrough in Radio Astronomy with Aperture Synthesis

Tabea Tietz
On September 27, 1918, English radio astronomer and Nobel Laureate Sir Martin Ryle was born. Ryle developed revolutionary radio telescope systems and used them for accurate location and imaging of weak radio sources. He was Astronomer Royal from 1972 to 1982 and shared the Nobel Prize in Physics in 1974 with Antony Hewish, the first Nobel prize awarded in recognition of astronomical research. “I think that the event which, more than anything else, led me…
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medical science
Archibald Hill and the Discipline of Biophysics

Archibald Hill and the Discipline of Biophysics

Tabea Tietz
On September 26, 1886, English physiologist and Nobel Laureate Archibald Vivian Hill was born. Hill is one of the founders of the diverse disciplines of biophysics and operations research. He shared the 1922 Nobel Prize in Physiology or Medicine for his elucidation of the production of heat and mechanical work in muscles. “One knows that after violent exercise one breathes heavily for some time: the more violent the exercise, the longer one’s respiration is…
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music
Dmitri Shostakovich’s Apocalyptic Soundtrack for the 20th century

Dmitri Shostakovich’s Apocalyptic Soundtrack for the 20th century

Harald Sack
On 25 September 1906, Soviet-era Russian composer and pianist Dmitri Shostakovich was born. He became internationally known after the premiere of his First Symphony in 1926 and was regarded throughout his life as a major composer. In addition to 15 symphonies, instrumental concertos, stage works and film music, he composed 15 string quartets, which are among the major works of the 20th century chamber music repertoire. “I live in the USSR, work…
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physics
John Ray Dunning and the Manhattan Project

John Ray Dunning and the Manhattan Project

Harald Sack
On September 24, 1907, US-American physicist John Ray Dunning was born. Dunning played key roles in the Manhattan Project that developed the first atomic bombs. He specialized in neutron physics, and did pioneering work in gaseous diffusion for isotope separation. John Ray Dunning – Early Years John Ray Dunning was born in Shelby, Nebraska, USA, the son of Albert Chester Dunning, a grain dealer, and his wife Josephine. He graduated from Shelby High…
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mathematics
Eratosthenes and the Circumference of the Earth

Eratosthenes and the Circumference of the Earth

Harald Sack
Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. He invented the discipline of geography, including the terminology used today. He is best known for being the first person to calculate the circumference of the Earth. “Eratosthenes of Cyrene, employing mathematical theories and geometrical methods, discovered from the course of the sun the…
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aviation
Eugen Sänger and Rocket Propulsion Engineering

Eugen Sänger and Rocket Propulsion Engineering

Tabea Tietz
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. By Rocket into Planetary Space After the early loss of his father, Eugen Sänger attended elementary schools in Budapest and Kelenföld. As early as 1918, Sänger…
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medical science
David Vetter, the Bubble Boy

David Vetter, the Bubble Boy

Tabea Tietz
On September 21, 1971, David Phillip Vetter was born. He was a prominent sufferer of severe combined immunodeficiency (SCID), a hereditary disease which dramatically weakens the immune system. In the media, Vetter was referred to as “David, the bubble boy“, because he lived in a special sterilized plastic cocoon bubble from birth until he died at age 12. Background Before David was born, his parents Carol Ann and David Vetter Jr. had their first…
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