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medical science
Paul Ehrlich’s Research on Chemotherapy and the Magic Bullet

Paul Ehrlich’s Research on Chemotherapy and the Magic Bullet

Tabea Tietz
On March 14, 1854, German Jewish physician Paul Ehrlich was born. Ehrlich made significant contributions in the fields of hematology, immunology, and chemotherapy. He invented the precursor technique to Gram staining bacteria. The methods he developed for staining tissue made it possible to distinguish between different type of blood cells, which led to the capability to diagnose numerous blood diseases. “In order to pursue chemotherapy successfully we must look for substances which…
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philosophy
Friedrich Schlegel – Towards a unifying Presentation of Philosophy, Prose, Poetry, Genius and Criticism

Friedrich Schlegel – Towards a unifying Presentation of Philosophy, Prose, Poetry, Genius and Criticism

Harald Sack
On March 10, 1772, German poet, literary critic, philosopher, philologist and indologist Friedrich Schlegel was born. A zealous promoter of the Romantic movement, together with his older brother, August Wilhelm Schlegel, he was one of the main figures of the Jena romantics. Schlegel was a pioneer in Indo-European studies, comparative linguistics, and morphological typology. “It is equally deadly to the mind to have a system and not to have one. So it…
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broadcasting
Walter Bruch and the PAL Color Television System

Walter Bruch and the PAL Color Television System

Harald Sack
On March 2, 1908, German electrical engineer and pioneer of German Television Walter Bruch was born. From the early 1930s Bruch was involved in the development of television technology. He is best known for the invention of the PAL color television system at Telefunken in the early 1960s. Walter Bruch – Early Years Walter Bruch was born in Neustadt an der Weinstraße, German Empire. At his father’s request he attended a business school, but…
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architecture
Leo von Klenze and the Greek Revival Style

Leo von Klenze and the Greek Revival Style

Harald Sack
On February 29, 1784, German neoclassicist architect, painter and writer Leo von Klenze was born. Court architect of Bavarian King Ludwig I, Leo von Klenze was one of the most prominent representatives of Greek revival style. Among his famous buildings are amongst others the Glyptothek in Munich, the New Hermitage in Saint Petersburg, or the Walhalla temple near Regensburg. Early Years Klenze was born in Buchladen, near Schladen, Lower Saxonia, Germany, to…
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archeology
The Sky Disc of Nebra

The Sky Disc of Nebra

Tabea Tietz
On February 23, 2002, the state archaeologist Harald Meller succeeded to acquire the now famous Nebra Sky Disc in a police-led sting operation in Basel, Switzerland. The Nebra Sky Disc is a Bronze age artifact shaped like a disk with a blue-green patina and inlaid with gold symbols, representing a map of the sky. The Disk The disk weighs about 2,3 kg and consists of bronze as well as an alloy made…
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mathematics
Lejeune Dirichlet and the Mathematical Function

Lejeune Dirichlet and the Mathematical Function

Harald Sack
On February 13, 1805, German mathematician Johann Peter Gustav Lejeune Dirichlet was born. Dirichlet is best known for his papers on conditions for the convergence of trigonometric series and the use of the series to represent arbitrary functions. He also proposed in 1837 the modern definition of a mathematical function. “In mathematics as in other fields, to find one self lost in wonder at some manifestation is frequently the half of a new discovery.”…
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philosophy
Immanuel Kant – Philosopher of the Enlightenment

Immanuel Kant – Philosopher of the Enlightenment

Harald Sack
On February 12, 1804, the great German philosopher Immanuel Kant passed away. He is widely considered to be a central figure of modern philosophy. He argued that human concepts and categories structure our view of the world and its laws, and that reason is the source of morality. His thought continues to hold a major influence in contemporary thought, especially in fields such as metaphysics, epistemology, ethics, political philosophy, and aesthetics. The problem…
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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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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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mathematics
Ernst Kummer and the Introduction of Ideal Numbers

Ernst Kummer and the Introduction of Ideal Numbers

Harald Sack
On January 29, 1810, German mathematician Ernst Eduard Kummer was born. One of his major contributions is the introduction of ideal numbers, which are defined as a special subgroup of a ring. He extended the fundamental theorem of arithmetic to complex number fields.He also discovered the fourth order surface based on the singular surface of the quadratic line complex. This Kummer surface has 16 isolated conical double points and 16 singular tangent…
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