SciHi Blog

Leonardo Da Vinci – the Prototype of a Renaissance Man

Leonardo Da Vinci – the Prototype of a Renaissance Man

On May 2, 1519, Italian Renaissance polymath Leonardo da Vinci passed away. Leonardo’s areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. He has been variously called the father of paleontology, ichnology, and architecture, and is widely considered one of the greatest painters of all time. “Painting is poetry which is seen and not heard, and poetry is a painting…
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The World Digital Library

The World Digital Library

On April 21, 2009, the World Digital Library (WDL) was launched. The WDL is an international digital library operated by UNESCO and the United States Library of Congress. The library intends to make available on the Internet, free of charge and in multilingual format, significant primary materials from cultures around the world, including manuscripts, maps, rare books, musical scores, recordings, films, prints, photographs, architectural drawings, and other significant cultural materials. A View of…
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Max Wertheimer and Gestalt Psychology

Max Wertheimer and Gestalt Psychology

On April 15, 1880, Austro-Hungarian-born psychologist Max Wertheimer was born. Wertheimer was one of the three founders of Gestalt psychology, along with Kurt Koffka [4] and Wolfgang Köhler. He is known for his book, Productive Thinking, and for conceiving the phi phenomenon as part of his work in Gestalt psychology. “Man is not only part of a field, but a part and member of his group. When people are together, as when they…
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Ockham’s Razor

Ockham’s Razor

Probably on April 10, 1347, English Franciscan friar and scholastic philosopher and theologian William of Ockham passed away. He is considered to be one of the major figures of medieval thought and was at the centre of the major intellectual and political controversies of the fourteenth century. He is commonly known for Occam’s razor, the methodological principle that bears his name, and also produced significant works on logic, physics, and theology. Probably…
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TGV V150 – The ‘Flying’ Train

TGV V150 – The ‘Flying’ Train

On April 3, 2007, the French V150, a specially configured TGV high-speed train, broke the world land speed record for conventional railed trains and reached a speed of 574.8 kilometres per hour (357.2 mph) on an unopened section of the LGV Est between Strasbourg and Paris, in France. A Brief History of Railway Speed Records A first speed record was set by the first really serviceable locomotive, the Rocket by George Stephenson,…
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Johann Rudolf Glauber – the first Chemical Engineer

Johann Rudolf Glauber – the first Chemical Engineer

On March 10, 1604, German-Dutch alchemist and chemist Johann Rudolf Glauber was born. His discovery of sodium sulfate in 1625 led to the compound being named after him: “Glauber‘s salt“. He also noted the formation of nitric acid from potassium nitrate and sulphuric acid. Glauber prepared many substances, made useful observations on dyeing, and described the preparation of tartar emetic. Early Years Johann Rudolf Glauber was born in Karlstadt am Main, the Kingdom…
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Avicenna – The Most Significant Polymath of the Islamic Golden Age

Avicenna – The Most Significant Polymath of the Islamic Golden Age

At about 980, Persian polymath bū ʿAlī al-Ḥusayn ibn ʿAbd Allāh ibn Al-Hasan ibn Ali ibn Sīnā, also known as Avicenna, was born. Avicenna is regarded as one of the most significant thinkers and writers of the Islamic Golden Age. His most famous works are The Book of Healing – a philosophical and scientific encyclopedia, and The Canon of Medicine – a medical encyclopedia, which became a standard medical text at many medieval…
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Alexander Ross Clarke and the true Shape of the Earth

Alexander Ross Clarke and the true Shape of the Earth

On December 16, 1828, British geodesist Alexander Ross Clarke was born. He is best known for his calculation of the Principal Triangulation of Britain (1858), the calculation of the Figure of the Earth (1858, 1860, 1866, 1880) and one of the most important text books of Geodesy (1880). The figures from his second determination became a standard reference for U.S. geodesy for most of the twentieth century until satellites could improve accuracy.…
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Omar Khayyam – Mathematics and Poetry

Omar Khayyam – Mathematics and Poetry

On December 4, 1131, Persian mathematician, astronomer, philosopher, and poet, Omar Khayyam; born Ghiyāth ad-Dīn Abu’l-Fatḥ ʿUmar ibn Ibrāhīm al-Khayyām Nīshāpūrī, passed away. He is widely considered to be one of the most influential scientists of the middle ages. He wrote numerous treatises on mechanics, geography, mineralogy and astronomy. “Whoever thinks algebra is a trick in obtaining unknowns has thought it in vain. No attention should be paid to the fact that…
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Ernst Chladni – The Father of Acoustics

Ernst Chladni – The Father of Acoustics

On November 30, 1756, German physicist and musician Ernst Florens Friedrich Chladni was born. His most important work, for which he is sometimes labeled the father of acoustics, included research on vibrating plates and the calculation of the speed of sound for different gases. He also undertook pioneering work in the study of meteorites and so is also regarded by some as the father of meteoritics. Ernst Chladni – Early Years Although…
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