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Tabea Tietz

archeology
Adolf Furtwängler and Photographic Archeology

Adolf Furtwängler and Photographic Archeology

Tabea Tietz
On June 30, 1853, German archaeologist and historian Adolf Furtwängler was born. He revolutionized archeological science with his use of photography for documentation. His use of photography in research supplanted the use of drawings because a camera gives objective reproduction with more accuracy, which enabled fragments to be scrutinized, even when they were miles apart. Adolf Furtwängler Background Adolf Furtwängler grew up in a very educated family. His father was a classical…
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mathematics
Sophie Germain and the Chladni Experiment

Sophie Germain and the Chladni Experiment

Tabea Tietz
On June 27, 1831, French mathematician, physicist, and philosopher Marie-Sophie Germain passed away. She is best known for her work in number theory and contributions to the applied mathematics of acoustics and elasticity. Her work on Fermat’s Last Theorem provided a foundation for mathematicians exploring the subject for hundreds of years after. Because of prejudice against her gender, she was unable to make a career out of mathematics, but she worked independently throughout her…
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astronomy
Charles Messier and the Discovery of Nebulae

Charles Messier and the Discovery of Nebulae

Tabea Tietz
On June 26, 1730, French astronomer Charles Messier was born. He is best known for his publication of an astronomical catalogue consisting of nebulae and star clusters that came to be known as the 110 “Messier objects”. The purpose of the catalogue was to help astronomical observers, in particular comet hunters such as himself, distinguish between permanent and transient visually diffuse objects in the sky. “What caused me to undertake the catalog was…
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engineering
Hermann Oberth’s Dream of Space Travel

Hermann Oberth’s Dream of Space Travel

Tabea Tietz
On June 25, 1894, Austro-Hungarian-born German physicist and engineer Hermann Oberth was born. He was the first, who when thinking about the possibility of spaceships grabbed a slide-rule and presented mathematically analyzed concepts and designs. Hermann Oberth Background Maybe you have already heard of the ‘Oberth Effect‘. In interplanetary spaceflight, the Oberth effect is used in a powered flyby where the application of an impulse, typically from a rocket engine, close to a…
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geology
Deodat de Dolomieu and the Love for Rocks

Deodat de Dolomieu and the Love for Rocks

Tabea Tietz
On June 23, 1750, French geologist Déodat Gratet de Dolomieu was born. He is best known for his field research in mineralogy. The mineral and the rock dolomite and the largest summital crater on the Piton de la Fournaise volcano were named after him. Déodat de Dolomieu, a Non-Actualistic Catastrophist Déodat de Dolomieu grew up in the Alps of southeastern France and showed early interest in his surrounding nature. However, he started a…
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astronomy
The Discovery of Charon, Pluto’s largest Moon

The Discovery of Charon, Pluto’s largest Moon

Tabea Tietz
On June 22, 1978, US astronomer James Christie discovered Charon, the largest moon of Pluto. Although there was a discussion after the reclassification of Pluto as a dwarf, Charon is not in the list of dwarf planets currently recognized by the IAU. A Bulge on Pluto On June 22, 1978,  James Christy had examined the magnified images of the former planet Pluto, taken with the 61-inch Flagstaff telescope two months prior. He noticed a…
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philosophy
Jürgen Habermas and Communicative Rationality

Jürgen Habermas and Communicative Rationality

Tabea Tietz
On June 18, 1929, German sociologist and philosopher Jürgen Habermas was born. Widely recognized as one of the world’s leading intellectuals, Habermas is perhaps best known for his theories on communicative rationality and the public sphere. “Subjects who reciprocally recognize each other as such, must consider each other as identical, insofar as they both take up the position of subject; they must at all times subsume themselves and the other under the…
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explorer
Sir Francis Drake’s discovery of Nova Albion

Sir Francis Drake’s discovery of Nova Albion

Tabea Tietz
On June 17, 1579, English explorer Sir Francis Drake raised a claim for a new land that he thought he had discovered during his circumnavigation of the world and named it “Nova Albion“. But he was not the first. Already in 1542, Spanish conquistador Juan Rodríguez Cabrillo had landed there and raised a claim for the Spanish crown. He founded a place he called San Miguel, later renamed to San Diego. But,…
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physics
James Clerk Maxwell and the Electromagnetic Fields

James Clerk Maxwell and the Electromagnetic Fields

Tabea Tietz
On June 13, 1831, Scottish physicist James Clerk Maxwell was born. His most prominent achievement was formulating a set of equations that united previously unrelated observations, experiments, and equations of electricity, magnetism, and optics into a consistent theory. According to his theory he has demonstrated that electricity, magnetism and light are all manifestations of the same phenomenon, namely the electromagnetic field. This has been called the “second great unification in physics”, after the…
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history
Glienicke Bridge – The Bridge of Spies and the biggest Agent Swap in History

Glienicke Bridge – The Bridge of Spies and the biggest Agent Swap in History

Tabea Tietz
On June 11, 1985, the biggest agent swap known in history occurred at the Glienicke Bridge in Potsdam. There was a swap of 23 American agents held in Eastern Europe for Polish agent Marian Zacharski and another three Soviet agents arrested in the West. The exchange was the result of three years of negotiation. The History of the Glienicke Bridge The Glienicke Bridge became very famous during the Cold War, not only…
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