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explorer
Erich von Drygalski’s Antarctic Expeditions

Erich von Drygalski’s Antarctic Expeditions

Harald Sack
On February 9, 1865, German geographer, geophysicist and polar scientist Erich Dagobert von Drygalski was born. Drygalski discovered a volcano, free of ice, on the Antarctic continent. He named it Gaussberg, after the name of his research ship Gauss in which he led the German South Polar Expedition (1901-03). Background Erich von Drygalski Erich von Drygalski was born in Köningsberg, East Prussia. At age 17, Drygalski began to study mathematics and natural science at…
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biology
Gregor Mendel and the Rules of Inheritance

Gregor Mendel and the Rules of Inheritance

Tabea Tietz
On February 8, 1865, German-speaking Silesian scientist and Augustinian friar Gregor Mendel publishes his “Versuche über Pflanzenhybride” (Experiments on Plant Hybridization) in which he describes his experiments with peas, which later became the foundation of the so-called Mendelian inheritance of genetics. “It is willingly granted that by cultivation the origination of new varieties is favored, and that by man’s labor many varieties are acquired which, under natural conditions, would be lost; but nothing…
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psychology
Alfred Adler and the Individual Psychology

Alfred Adler and the Individual Psychology

Harald Sack
On February 7, 1870, Austrian psychiatrist and ophthalmologist Alfred W. Adler was born. He is best known for being the founder of the school of individual psychology. Alfred Adler considered human beings as an individual whole, therefore he called his psychology “Individual Psychology“. Moreover, Adler also was the first to emphasize the importance of the social element in the re-adjustment process of the individual and who carried psychiatry into the community. “The…
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engineering
Aldus Manutius and the Perfection of Book Printing

Aldus Manutius and the Perfection of Book Printing

Harald Sack
On February 6, 1515, Venetian printer and publisher Aldus Pius Manutius passed away, the Italian humanist, scholar, educator, and the founder of the Aldine Press. Manutius devoted the later part of his life to publishing and disseminating rare texts. His interest in and preservation of Greek manuscripts mark him as an innovative publisher of his age dedicated to the editions he produced. His enchiridia, small portable books, revolutionized personal reading and are…
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botany
John Lindley and his Attempts to Formulate a Natural System of Plant Classification

John Lindley and his Attempts to Formulate a Natural System of Plant Classification

Harald Sack
On February 5, 1799, English botanist, gardener and orchidologist John Lindley was born. His attempts to formulate a natural system of plant classification greatly aided the transition from the artificial (considering the characters of single parts) to the natural system (considering all characters of a plant). He made the first definitive orchid classification in 1830. John Lindley Background John Lindley was born in Catton, near Norwich, England, as one of four children…
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philosophy
The Encyclopaedia of Rabanus Maurus

The Encyclopaedia of Rabanus Maurus

Harald Sack
On February 4, 856, Frankish Benedictine monk, theologian, poet, encyclopedist and military writer Rabanus Maurus Magnentius passed away. He was the author of the encyclopaedia De rerum naturis (“On the Natures of Things“). He also wrote treatises on education and grammar and commentaries on the Bible. He was one of the most prominent teachers and writers of the Carolingian age, and was called “Praeceptor Germaniae,” or “the teacher of Germany.” How Rabanus…
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poetry
The Expressionistic Power of The Poems of Georg Trakl

The Expressionistic Power of The Poems of Georg Trakl

Harald Sack
On February 3, 1887, Austrian poet Georg Trakl was born. Trakl is most probably the most important Austrian poet of Expressionism with strong influences of Symbolism. However, it is not possible to clearly assign his poetic works to one of the almost simultaneous currents of literary history of the 20th century. Verwandlung (2. Fassung) Entlang an Gärten, herbstlich, rotversengt: Hier zeigt im Stillen sich ein tüchtig Leben. Des Menschen Hände tragen braune…
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chemistry
Dimitri Mendeleev and the Periodic Table of Elements

Dimitri Mendeleev and the Periodic Table of Elements

Tabea Tietz
On February 2, 1907, Russian chemist and inventor Dimitri Ivanovich Mendeleev passed away. He is probably best known for his version of the periodic table of chemical elements. Furthermore, he used it to correct the properties of some already discovered elements and also to predict the properties of eight elements yet to be discovered. “I wish to establish some sort of system not guided by chance but by some sort of definite…
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philosophy
The Art of Hiding Information – Johannes Trithemius’ Steganography

The Art of Hiding Information – Johannes Trithemius’ Steganography

Harald Sack
On February 1, 1462, German Benedictine abbot and polymath Johannes Trithemius was born. Trithemius was active in the German Renaissance as a lexicographer, chronicler, cryptographer, and occultist. He had considerable influence on the development of early modern cryptography and modern occultism. However,  “Speak of things public to the public, but of things lofty and secret only to the loftiest and most private of your friends. Hay to the ox and sugar to…
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