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Tabea Tietz

art
Honoré Daumier and the Art of Caricature

Honoré Daumier and the Art of Caricature

Tabea Tietz
On February 10, 1879, French printmaker, caricaturist, painter, and sculptor Honoré Daumier passed away. A rather prolific draftsman, Daumier produced over 500 paintings, 4000 lithographs, 1000 wood engravings, 1000 drawings and 100 sculptures. He was perhaps best known for his caricatures of political figures and satires on the behavior of his countrymen, although posthumously the value of his painting has also been recognized. Honoré Daumier Background Honoré Daumier was born in 1808 in…
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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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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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aviation
Charles Green and his Record Balloon Flight

Charles Green and his Record Balloon Flight

Tabea Tietz
On January 31, 1785, Charles Green was born, who was United Kingdom’s most famous balloonist of the 19th century. He experimented with coal gas as a cheaper and more readily available alternative to hydrogen for lifting power. In 1836, Green set a major long distance record in the balloon “Royal Vauxhall”, flying overnight from Vauxhall Gardens in London to Weilburg, Duchy of Nassau (Germany) a distance of 770 km. This record was not broken until…
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astronomy
Johannes Hevelius and his Selenographia

Johannes Hevelius and his Selenographia

Tabea Tietz
On January 28, 1611, German astronomer Johannes Hevelius was born. From four years’ telescopic study of the Moon, using telescopes of long focal power, Hevelius compiled Selenographia (“Pictures of the Moon“, 1647), an atlas of the Moon with some of the earliest detailed maps. Family Background and Early Years Johannes Hevelius‘ father was a succesful merchant and pushed Johannes to follow his footsteps rather than pursue a scientific career. Hevelius was sent to Poland…
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astronomy
The Hale Telescope at Palomar Observatory

The Hale Telescope at Palomar Observatory

Tabea Tietz
On January 26, 1949, the Hale telescope at Palomar Observatory sees first light under the direction of Edwin Hubble,[4] becoming the largest aperture optical telescope (until BTA-6 was built in 1976). George Ellery Hale George Ellery Hale was a solar astronomer, who was born and grew up in Chicago, Illinois [5]. He studied at MIT, Harvard and in Berlin. He is mostly known for his invention of the spectrohelioscope during his time at…
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explorer
Fabian von Bellingshausen and the Discovery of Antarctica

Fabian von Bellingshausen and the Discovery of Antarctica

Tabea Tietz
On January 25, 1852, Baltic German officer in the Imperial Russian Navy, cartographer and explorer Fabian Gottlieb von Bellingshausen passed away. He was a notable participant of the first Russian circumnavigation and subsequently a leader of another circumnavigation expedition, which discovered the continent of Antarctica. He is remembered in Russia as one if its greatest admirals and explorers, and multiple geographical features and locations in the Antarctic, named in honor of Bellingshausen, remind of…
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geology
Andrija Mohorovičić and the Mohorovičić Discontinuity

Andrija Mohorovičić and the Mohorovičić Discontinuity

Tabea Tietz
On January 23, 1857, Croatian meteorologist and seismologist Andrija Mohorovičić was born. He is best known for the eponymous Mohorovičić discontinuity, i.e. the boundary between the Earth’s crust and mantle discovered by him – and is considered a founder of modern seismology. Andrija Mohorovičić Background Andrija Mohorovičić proved to be a talented student from early age. By the age of 15, he spoke English, French and Italian and learned German, Czech, Latin and Ancient…
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engineering
John Fitch and the Invention of the First Steam Boat

John Fitch and the Invention of the First Steam Boat

Tabea Tietz
On January 21, 1743, American inventor, clockmaker, entrepreneur and engineer John Fitch was born. He was most famous for operating the first steamboat service in the United States even before Robert Fulton.[3] John Fitch – Biographical Information John Fitch grew up with his father and was pulled from school at the age of eight and had to work at the family farm. Eventually, he fled and took up silversmithing before exploring the Ohio River…
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engineering
Sir Henry Bessemer and the Secret of Steel

Sir Henry Bessemer and the Secret of Steel

Tabea Tietz
On January 19, 1813, English engineer, inventor, and businessman Sir Henry Bessemer was born. Bessemer’s name is chiefly known in connection with the Bessemer process, the first process for manufacturing steel inexpensively (1856), leading to the development of the Bessemer converter. “I had an immense advantage over many others dealing with the problem inasmuch as I had no fixed ideas derived from long-established practice to control and bias my mind, and did not…
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