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physics
Sin-Itiro Tomonaga and Quantum Electrodynamics

Sin-Itiro Tomonaga and Quantum Electrodynamics

Harald Sack
On March 31, 1906, Japanese physicist and Nobel laureate Sin-Itiro Tomonaga was born. He was influential in the development of quantum electrodynamics, work for which he was jointly awarded the Nobel Prize in Physics in 1965 along with Richard Feynman and Julian Schwinger. Tomonaga was one of the first to apply quantum theory to subatomic particles with very high energies. “Nature was not satisfied by a simple point charge but required a…
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engineering
Jethro Tull and the Agricultural Revolution

Jethro Tull and the Agricultural Revolution

Tabea Tietz
On March 30, 1674, English agricultural pioneer Jethro Tull was baptized. He perfected a horse-drawn seed drill in 1701 that economically sowed the seeds in neat rows. He later developed a horse-drawn hoe. Tull’s methods were adopted by many great land owners and helped to provide the basis for modern agriculture. This revolutionized the future of agricultural success. “All sorts of dung and compost contain some matter which, when mixed with the soil, ferments…
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biology
Charles Elton and the beginning of Modern Animal Ecology

Charles Elton and the beginning of Modern Animal Ecology

Tabea Tietz
On March 29, 1900, English zoologist and animal ecologist Charles Sutherland Elton was born. Elton‘s name is associated with the establishment of modern population and community ecology, including studies of invasive organisms. In 1927, Elton published his now classic book Animal Ecology, in which he took up the concept of food chains that had been originally introduced by the African-Arab scientist and philosopher Al-Jahiz in the 9th century. “Food is the burning…
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mathematics
Nicolas de Condorcet and the Condorcet method

Nicolas de Condorcet and the Condorcet method

Harald Sack
On March 28, 1794, French philosopher, mathematician, and early political scientist Nicolas de Condorcet died a mysterious death in prison after a period of flight from French Revolutionary authorities. He is probably best known for the Condorcet method, which in voting tally selects the candidate who would beat each of the other candidates in a run-off election. Unlike many of his contemporaries, he advocated a liberal economy, free and equal public instruction, constitutionalism,…
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literature
Heinrich Mann – Social Criticism, Marlene Dietrich, and Californian Exile

Heinrich Mann – Social Criticism, Marlene Dietrich, and Californian Exile

Harald Sack
On March 27, 1871, German novelist Luiz (Ludwig) Heinrich Mann was born. Being the elder brother of Nobel laureate Thomas Mann,[4] he wrote works with strong social themes. His numerous criticisms of the growth of fascism forced him to flee for his life after the Nazis came to power in 1933. His book “Professor Unrat” was freely adapted into the legendary movie “Der Blaue Engel” starring Marlene Dietrich in her first major role.…
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economics
Ernst Engel and Engel’s Law of Microeconomics

Ernst Engel and Engel’s Law of Microeconomics

Tabea Tietz
On March 26, 1821, German statistician Ernst Engel was born. Engel was head of the Prussian Statistical Bureau (1860-82) and is best known for the “Engel curve,” or Engel‘s law, which states that the proportion of expenditure on food will fall as income rises, i.e. food is a necessary good. He who attempts to draw any conclusion whatever as to the nation’s wealth or poverty from the mere fact of a favorable…
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philosophy
Guillaume Postel – French Linguist and Religious Universalist

Guillaume Postel – French Linguist and Religious Universalist

Harald Sack
On March 25, 1510, French linguist, astronomer, Cabbalist, diplomat, professor, and religious universalist Guillaume Postel was born. A universal and cosmopolitan spirit, Postel is the most characteristic French representative of the Christian Kabbalah. “Ibn Sina says more in one or two pages than does Galen in five or six large volumes” – Guillaume Postel Guillaume Postel – From Politics to Philology Postel was adept at Arabic, Hebrew, and Syriac and other Semitic languages, as…
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mathematics
Joseph Sauveur and the Science of Acoustics

Joseph Sauveur and the Science of Acoustics

Harald Sack
On March 24, 1653, French mathematician and physicist Joseph Sauveur was born. Sauveur is known principally for his detailed studies on acoustics, a term he also has coined for the first time. Joseph Sauveur – Early Years Joseph Sauveur was the son of a provincial notary in La Fléche, France. Despite a hearing and speech impairment that kept him totally mute until he was seven, Joseph benefited from a fine education at…
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physics
John Randall and the Cavity Magnetron

John Randall and the Cavity Magnetron

Tabea Tietz
On March 23, 1905, British physicist and biophysicist Sir John Randall was born. Randall is credited with radical improvement of the cavity magnetron, an essential component of centimetric wavelength radar, which was one of the keys to the Allied victory in the Second World War. It is also the key component of microwave ovens. He also led the King’s College, London team which worked on the structure of DNA. John Randall –…
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space
Valeri Polyakov and the Longest Single Space Flight

Valeri Polyakov and the Longest Single Space Flight

Tabea Tietz
On March 22, 1995, Russian cosmonaut Valeri Polyakov returned to earth after a 437 days space flight, setting a record for the longest single spaceflight in human history so far, staying aboard the Mir space station.[4] Polyakov did not suffer from any prolonged performance impairments after returning to Earth. In light of these findings, researchers concluded that a stable mood and overall function could be maintained during extended duration spaceflights, such as manned…
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