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Harald Sack

war/crime
Constantine and the Battle at the Milvian Bridge

Constantine and the Battle at the Milvian Bridge

Harald Sack
On October 28, 312 AD, the Battle of the Milvian Bridge between the Roman Emperors Constantine I and Maxentius took place. Constantine won the battle and started on the path that led him to end the Tetrarchy and become the sole ruler of the Roman Empire. According to historians, the battle marked the beginning of Constantine’s conversion to Christianity and thus fostered the rise of Christianity. Not only Just Another One of those Roman…
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engineering
Jean-Rondolphe Perronet and the Bridges of Paris

Jean-Rondolphe Perronet and the Bridges of Paris

Harald Sack
On October 27, 1708, French architect and structural engineer Jean-Rodolphe Perronet was born. He is best known for his many stone arch bridges, among them his most popular work, the Paris Pont de la Concorde. “Great bridges being monuments which serve to make known the grandeur and genius of a nation, we cannot pay too much attention to means for perfecting their architecture; this may be varied in treatment, but there must…
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medical science
Giovanni Maria Lancisi – the First Modern Hygienist

Giovanni Maria Lancisi – the First Modern Hygienist

Harald Sack
On October 26, 1654, Italian physician, epidemiologist and anatomist Giovanni Maria Lancisi was born. A personal physician to three popes, he is considered the first modern hygienist. He made a correlation between the presence of mosquitoes and the prevalence of malaria. He was also known for his studies about cardiovascular diseases, and is remembered in the eponymous Lancisi’s sign. Youth and Education Giovanni Maria Lancisi, also often referred to under his Latinized…
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history
Charles Martel and the Battle of Tours and Poitiers

Charles Martel and the Battle of Tours and Poitiers

Harald Sack
On October 25, 732 AD, the Battle of Tours and Poitiers between the united Frankish and Burgundian forces under Austrasian Mayor of the Palace Charles Martel, against an army of the Umayyad Caliphate led by Abdul Rahman Al Ghafiqi, Governor-General of al-Andalus, ended the Islamic expansion era in Europe. It is argued among historians that Charles Martel’s victory was one of the most important events in European or even world history. The…
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engineering
Charles Joseph Minard and the Art of Infographics

Charles Joseph Minard and the Art of Infographics

Harald Sack
On October 24, 1870, French civil engineer Charles Joseph Minard passed away. He is best noted for his ground breaking inventions in the field of information graphics. Charles Joseph Minard – Early Years Charles Joseph Minard was born on March 27, 1781, in Dijon, in the parish of Saint-Michel, France, as the son of Pierre Etienne Minard, a clerk of the court and an officer of the secondary school, and his wife…
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astronomy
The Planetary Tables of Erasmus Reinhold

The Planetary Tables of Erasmus Reinhold

Harald Sack
On October 22, 1511, German astronomer and mathematician Erasmus Reinhold was born. He is considered to be the most influential astronomical pedagogue of his generation. Furthermore, he is best known for his carefully calculated first set of planetary tables applying Copernican theory, published in 1551. Erasmus Reinhold Background Erasmus Reinhold was born and died in Saalfeld, Thuringia, Germany. His father Johannes Reinhold was a tax collector. In 1530 went to Wittenberg to study at…
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literature
Arthur Rimbaud and his Influence on Modernism

Arthur Rimbaud and his Influence on Modernism

Harald Sack
On October 20, 1854, French poet Jean Nicolas Arthur Rimbaud was born. Rimbaud is known for his influence on modern literature and arts, prefiguring surrealism. As a poet, Rimbaud is well known for his contributions to symbolism and, among other works, for A Season in Hell, a precursor to modernist literature. “Lighter than a cork I danced on the waves.” – Arthur Rimbaud, The Drunken Boat (1871) Arthur Rimbaud – Family Background…
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astronomy
Subrahmanyan Chandrasekhar and the Evolution of Stars

Subrahmanyan Chandrasekhar and the Evolution of Stars

Harald Sack
On October 19, 1910, Indian-American astrophysicist and Nobel Laureate Subrahmanyan Chandrasekhar was born. He won the 1983 Nobel Prize for Physics together with William Alfred Fowler for key discoveries that led to the currently accepted theory on the later evolutionary stages of massive stars. Actually, winning Nobel Prizes in physics must lie somehow in the family of Chandrasekhar, because his uncle Sir Chandrasekhara Venkata Raman won the Nobel Prize for Physics already in 1930,…
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physics
Evangelista Torricelli and the Barometer

Evangelista Torricelli and the Barometer

Harald Sack
On October 15, 1608, Italian physicist and mathematician Evangelista Torricelli was born, best known for his invention of the barometer, but is also known for his advances in Optics. Evangelista Torricelli Background Evangelista Torricelli was born in Rome, the firstborn child of Gaspare Ruberti, a poor textile worker, and Giacoma Torricelli. His family was from Faenza in the Province of Ravenna, then part of the Papal States. His parents sent Evangelista to…
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mathematics
Pythagoras and his Eponymous Theorem

Pythagoras and his Eponymous Theorem

Harald Sack
One of the founders of Western mathematics was the Greek philosopher Pythagoras of Samos. He is often revered as a great mathematician, mystic, and scientist and is best known for the Pythagorean theorem which bears his name. It was said that he was the first man to call himself a philosopher, or lover of wisdom. Anyway, his eponymous theorem possibly is the best known theorem in mathematics. Pythagoras Accurate facts about the life…
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