Yearly Archives: 2021

Felix Klein and the Klein-Bottle

Felix Klein and the Klein-Bottle

On April 25, 1849, German mathematician and mathematics educator Felix Klein was born. Klein is known for his work in group theory, complex analysis, non-Euclidean geometry, and on the connections between geometry and group theory. His 1872 Erlangen Program, classifying geometries by their underlying symmetry groups, was a hugely influential synthesis of much of the mathematics of the day. Klein also devised the Klein-bottle, a one-sided surface which, if traveled upon, could…
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Tha Last Space Mission of Vladimir Komarov

Tha Last Space Mission of Vladimir Komarov

On April 24, 1967, Soviet astronaut Vladimir Mikhaylovich Komarov died in the first fatal accident of a space mission. Komarov was killed when the Soyuz 1 space capsule crashed after re-entry due to a parachute failure. During his time at the Cosmonaut Training Center, he contributed to space vehicle design, cosmonaut training and evaluation and public relations. He was eventually selected to command the first Soviet multiman Voskhod 1 spaceflight that presented a…
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Alphonse Bertillon’s Anthropometric Identification System

Alphonse Bertillon’s Anthropometric Identification System

On April 23,1853, French police officer and biometrics researcher Alphonse Bertillon was born. Bertillon was the first who applied the anthropological technique of anthropometry to law enforcement creating an identification system based on physical measurements. Anthropometry was the first scientific system used by police to identify criminals. Before that time, criminals could only be identified by name or photograph. The method was eventually supplanted by fingerprinting. Born in a Family of Scientists…
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Anaximander and the Milesian School of Philosophy

Anaximander and the Milesian School of Philosophy

At about 610 BC, pre-Socratic Greek philosopher Anaximander of Miletus was born. He belonged to the Milesian school and learned the teachings of his master Thales. According to available historical documents, he is the first philosopher known to have written down his studies, although only one fragment of his work remains. An early proponent of science he tried to observe and explain different aspects of the universe, with a particular interest in its…
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The Passionate Life of Charlotte Brontë

The Passionate Life of Charlotte Brontë

On April 21, 1816, English novelist and poet Charlotte Brontë, the eldest of the three Brontë sisters was born, whose novels are English literature standards. Most notably she wrote Jane Eyre under the pen name Currer Bell. “I can be on guard against my enemies, but God deliver me from my friends!” – Charlotte Brontë, in response to George Henry Lewes (LL, II, v, 272) Why I read Charlotte Brontë Following the usual stereotype, computer scientists…
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Philippe Pinel – the Father of modern Psychiatry

Philippe Pinel – the Father of modern Psychiatry

On April 20, 1745, French physician Philippe Pinel was born. He was instrumental in the development of a more humane psychological approach to the custody and care of psychiatric patients, referred to today as moral therapy. He also made notable contributions to the classification of mental disorders and has been described by some as “the father of modern psychiatry“. “I cannot here avoid giving my most decided sufferage in favour of the moral qualities…
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Pierre Curie – A Pioneer in Radioactivity

Pierre Curie – A Pioneer in Radioactivity

On 19 April 1906, French physicist and Nobel laureate Pierre Curie died in an accident. A pioneer in crystallography, magnetism, piezoelectricity and radioactivity, he co-jointly received the Nobel Prize in Physics in 1903 with his wife, Marie Skłodowska-Curie, and Henri Becquerel, “in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor Henri Becquerel“.[9] “If one leaves a wooden or cardboard box containing a…
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John Graunt and the Science of Demography

John Graunt and the Science of Demography

On April 18, 1674, English herberdasher and statistician John Graunt passed away. Graunt is considered by many historians to have founded the science of demography as the statistical study of human populations. For his published analysis of the parish records of christenings and deaths, he was made a charter member of the Royal Society. “Having always observed that most of them who constantly took in the weekly Bills of Mortality made little other use of them…
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Sir Leonard Woolley and the Excavations in Ur

Sir Leonard Woolley and the Excavations in Ur

On April 17, 1880, British archaeologist Sir Charles Leonard Woolley was born. Woolley was best known for his excavations at Ur in Mesopotamia. He is considered to have been one of the first “modern” archaeologists, and was knighted in 1935 for his contributions to the discipline of archaeology. Leonard Woolley – Early Years Leonard Woolley was born in London, the son of a clergyman, and was brother to Geoffrey Harold Woolley, VC, and George Cathcart Woolley.…
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Charlie Chaplin – Master of Comedy and Beyond

Charlie Chaplin – Master of Comedy and Beyond

On April 16, 1889, English comic actor, filmmaker, and composer Sir Charles Spencer Chaplin was born. He rose to fame in the era of silent film and became a worldwide icon through his screen persona, The Tramp. Chaplin is considered one of the most important figures in the history of the film industry. His career spanned more than 75 years and encompassed both adulation and controversy. “Wars, conflict, it’s all business. “One murder…
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