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physics
Paul Dirac and the Quantum Mechanics

Paul Dirac and the Quantum Mechanics

Tabea Tietz
On August 8, 1902, English theoretical physicist Paul Adrien Maurice Dirac was born. Dirac is best known for his fundamental contributions to the early development of both quantum mechanics and quantum electrodynamics. “The aim of science is to make difficult things understandable in a simpler way; the aim of poetry is to state simple things in an incomprehensible way. The two are incompatible.” — Paul Dirac Paul Dirac Background Paul Dirac was born…
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physics
Victor Franz Hess and the Cosmic Radiation

Victor Franz Hess and the Cosmic Radiation

Tabea Tietz
On August 7, 1912, Austrian physicist Victor Franz Hess provided evidence of a high-altitude radiation in one of his balloon rides, which later was called cosmic radiation. Together with Carl Anderson, he received the 1936 Nobel Prize in Physics for the discovery of cosmic radiation. What causes Ionization of the Air? Victor Franz Hess was educated in Graz, Austria. There, he attended the grammar school and the University of Graz. At the Physical…
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mathematics
What is a Mathematical Function – according to Johann Bernoulli

What is a Mathematical Function – according to Johann Bernoulli

Harald Sack
On August 6, 1667, Swiss mathematician Johann Bernoulli was born. He was one of the many prominent mathematicians in the Bernoulli family. He is known for his contributions to infinitesimal calculus and educating Leonhard Euler in the pupil’s youth.[1] “I recognize the lion by his claw.” – Johann Bernoulli, after reading an anonymous solution to a problem that he realized was Newton’s solution.[10] Johann Bernoulli and the Early Days of Calculus Johann I…
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psychology
Rensis Likert and the Likert Scale Method

Rensis Likert and the Likert Scale Method

Harald Sack
On August 5, 1903, American social psychologist Rensis Likert was born. Likert is primarily known for developing the Likert scale method, an approach to creating a psychometrically sound scale based on responses to multiple questions or “items.” Likert’s method has become a time-honored way to measure people’s reactions such as to opinion surveys as well as personality tests. “A number of statistical assumptions are made in the application of his (Thurstone’s) attitude…
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art
Nicolas-Jacques Conté and the Creation of the Pencil

Nicolas-Jacques Conté and the Creation of the Pencil

Harald Sack
On August 4, 1755, French painter, inventor, army officer and balloonist, Nicolas-Jacques Conté was born. Among others, he is credited with the invention of the modern pencil. Moreover, some consider him one of the greatest inventive minds of the eighteenth century. He distinguished himself for his mechanical genius which was of great avail to the French army in Egypt. Napoleon Bonaparte called him “a universal man with taste, understanding and genius capable of…
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engineering
Richard Arkwright – the Father of the Industrial Revolution

Richard Arkwright – the Father of the Industrial Revolution

Tabea Tietz
On August 3, 1792, Sir Richard Arkwright passed away. He was a self-made man and a leading entrepreneur during the early Industrial Revolution. Arkwright’s achievement was to combine power, machinery, semi-skilled labour and the new raw material (cotton) to create mass-produced yarn. His skills of organization made him, more than anyone else, the creator of the modern factory system. Later in his life Arkwright was also known as ‘the Father of the Industrial Revolution‘.…
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physics
John Tyndall and the Physics of Air

John Tyndall and the Physics of Air

Harald Sack
On August 2, 1820, British physicist John Tyndall was born. His initial scientific fame arose in the 1850s from his study of diamagnetism. Later he made discoveries in the realms of infrared radiation and the physical properties of air. As the most prominent example, he was able to demonstrate why the sky is blue. “Every occurrence in Nature is preceded by other occurrences which are its causes, and succeeded by others which are…
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astronomy
Maria Mitchell and “Miss Mitchell’s Comet”

Maria Mitchell and “Miss Mitchell’s Comet”

Harald Sack
On August 1, 1814, American astronomer Maria Mitchell was born who, in 1847, by using a telescope, discovered a comet which as a result became known as “Miss Mitchell’s Comet“. „We especially need imagination in science. It is not all mathematics, nor all logic, but is somewhat beauty and poetry.” – Maria Mitchell Maria Mitchell – Youth and Education Maria Mitchell was born in Nantucket, Massachusetts, USA, among nine brothers and sisters…
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chemistry
Stephanie Kwolek and the Bullet-proof Vests

Stephanie Kwolek and the Bullet-proof Vests

Tabea Tietz
On July 31, 1923, American polymer chemist Stephanie Louise Kwolek was born. She is best known for her invention of poly-paraphenylene terephthalamide – better known as Kevlar. Stephanie Kwolek – Becoming a Chemist Stephanie Kwolek was born to Polish immigrant parents in the Pittsburgh suburb of New Kensington, Pennsylvania. Her father, John Kwolek died when she was ten years old. She inherited her love for fabrics and sewing from her mother. Before thinking…
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history
Marius and the Battle of the Raudine Plain

Marius and the Battle of the Raudine Plain

Harald Sack
On July 30, 101 BC, the Battle of the Raudine Plain took place, which resulted in the Roman victory of Consul Gaius Marius over the invading Germanic tribe of the Cimbri near the settlement of Vercellae in Cisalpine Gaul. The entire tribe of the Cimbri was virtually wiped out and the plans of the Germanic tribes of an invasion of Rome was put to an end. “[Now a danger occurred] that threatened Italy from…
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