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history
Smile! Harvey Ball and his famous Icon

Smile! Harvey Ball and his famous Icon

Harald Sack
On July 10, 1921, the inventor of the smiley, Harvey Ball, was born. The Life of a Advertising Man Ball was born and raised in Worcester, Massachusetts by his parents Ernest G Ball and Christine or Kitty Ross Ball. During his time as a student at Worcester South High School, he became an apprentice to a local sign painter, and later attended the Worcester Art Museum School, where he studied fine arts. Ball was…
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astronomy
To Boldly Go Where No Man Has Gone Before – Voyager 2

To Boldly Go Where No Man Has Gone Before – Voyager 2

Harald Sack
On July 9, 1979 the interplanetary spacecraft Voyager 2 passed Jupiter, the largest planet in the Solar System. The space probe had been launched by NASA on August 20, 1977 to study the outer Solar System and eventually to push forward into interstellar space. Until today,  operating for more than 30 years the spacecraft still receives routine commands and transmits data back to the Deep Space Network, a world-wide network of large antennas…
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literature
Gothic – The Life and Works of Percy Bysshe Shelley

Gothic – The Life and Works of Percy Bysshe Shelley

Harald Sack
On July 8 1822 the great English Romantic poet Percy Bysshe Shelley drowned near the Italian coast. He was one of the major English Romantic poets and is critically regarded as among the finest lyric poets in the English language. Shelley was famous for his association with John Keats and Lord Byron. And actually he was married with novelist Mary Wollstonecraft Shelley, the author of the famous ‘Frankenstein‘.[1] “When the lamp is shattered…
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literature
Elementary, my Dear Watson! – Sir Arthur Conan Doyle and his famous Sherlock Holmes

Elementary, my Dear Watson! – Sir Arthur Conan Doyle and his famous Sherlock Holmes

Harald Sack
On July 7, 1939, one of the most prolific, versatile and successful authors of the late 19th and early 20th century, Sir Arthur Conan Doyle passed away. Besides his best known character, the ‘consulting detective’ of the London police, Sherlock Holmes and his dear friend and advisor Dr. John Watson, he also wrote science fiction stories, plays, romances, poetry, non-fiction and historical novels. “It is an old maxim of mine that when you…
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physics
The misjudged Math Teacher – Georg Simon Ohm

The misjudged Math Teacher – Georg Simon Ohm

Harald Sack
On July 6, 1854, the Bavarian physicist and mathematician Georg Simon Ohm passed away, he was best known for his research on electricity and it was him to initiate the subject of circuit theory. The SI unit of electrical resistance and Ohm’s law are named after this Bavarian ‘teacher’. “The design of this Memoir is to deduce strictly from a few principles, obtained chiefly by experiment, the rationale of those electrical phenomena which are produced…
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physics
Sir Isaac Newton and the famous Principia

Sir Isaac Newton and the famous Principia

Harald Sack
On July 5, 1687, Sir Isaac Newton published his Philosophiae Naturalis Principia Mathematica (in Latin). The Principia states Newton’s laws of motion, forming the foundation of classical mechanics; Newton’s law of universal gravitation; and a derivation of Kepler’s laws of planetary motion (which Kepler first obtained empirically).[6] It is to be considered as the most influential work of Isaac Newton and as one of the greatest scientific works of all time. “The ancients…
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astronomy
The Supernova of 1054

The Supernova of 1054

Harald Sack
On July 4, 1054, Chinese astronomers observed a new star in the constellation of Taurus, which later turned out to be a supernova. However, even before the Chinese, on 11 April 1054, a monk in Flanders noticed a “bright disc in the afternoon“. This was the first traditional observation of a supernova explosion. “First year of the Zhihe era, fifth lunar month, ji-chou day. A guest star has appeared to the south-east of…
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economics
Charles Dow and his Famous Stock Index

Charles Dow and his Famous Stock Index

Harald Sack
On July 3 1884 Charles Henry Dow together with his colleague Edward Jones composed and published an stock average – called the Dow Jones Railroad Average -, which contained nine railroads and two industrial companies. He developed the stock index as part of his market research and it was meant to serve as a reference value to determine fluctuations of the stock market. It first appeared in the Customer’s Afternoon Letter, a daily…
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history
“I shall be heard!” – The Case of the La Amistad

“I shall be heard!” – The Case of the La Amistad

Harald Sack
On July 2, 1839, Sengbe Pieh (later known as Joseph Cinqué) led 53 fellow Africans being transported as captives aboard the Spanish schooner ‘La Amistad‘ from Havana in a revolt against their captors. Breaking Free La Amistad, captained by Ferrer, left Havana on June 28, 1839, for the small port of Guanaja, near Puerto Principe, Cuba, with some general cargo and 53 slaves bound for the sugar plantation where they were to…
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computer science
Let Us Calculate – the Last Universal Academic Gottfried Wilhelm Leibniz

Let Us Calculate – the Last Universal Academic Gottfried Wilhelm Leibniz

Harald Sack
On July 1, 1646, one of the last universally interdisciplinary academics, active in the fields of mathematics, physics, history, politics, philosophy, and librarianship was born. Gottfried Wilhelm Leibniz counts as one of the most influential scientists of the late 17th and early 18th century and impersonates a meaningful representative of the Age of Enlightenment. Moreover, I even have a personal relationship with him since he is also the namesake of the association to…
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