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Euclid of Alexandria – the Father of Geometry

Euclid of Alexandria – the Father of Geometry

Harald Sack
At about 330 BC, Euclid of Alexandria was born, who often is referred to as the Father of Geometry. His Elements is one of the most influential works in the history of mathematics, serving as the main textbook for teaching mathematics (especially geometry) from the time of its publication until the late 19th or early 20th century. In the Elements, Euclid deduced the principles of what is now called Euclidean geometry from…
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astronomy
Hans Lippershey and the Telescope

Hans Lippershey and the Telescope

Tabea Tietz
On October 2, 1608,  German-Dutch lensmaker Hans Lippershey applied to the States-General of the Netherlands for a patent for his instrument “for seeing things far away as if they were nearby”. Telescope History Even though scientists of the middle ages never heard of telescopes and most of them did not know specific laws of optics, they started laying the foundations for telescopes as we know them today. Before the invention of the telescope…
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astronomy
Nicolaus Copernicus and the Heliocentric Model

Nicolaus Copernicus and the Heliocentric Model

Harald Sack
On February 19, 1473, Renaissance mathematician and astronomer Nicolaus Copernicus was born, who established the heliocentric model, which placed the Sun, rather than the Earth, at the center of the universe. With the publication of his research he started the so-called Copernican Recolution, which started a paradigm shift away from the former Ptolemaic model of the heavens, which postulated the Earth at the center of the universe, towards the heliocentric model with the…
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astronomy
The Galileo Affair

The Galileo Affair

Harald Sack
On February 13, 1633, Galileo Galilei arrived in Rome and was brought before the inquisitor Vincenzo Maculani to be charged for his defence of the Copernican theory in his writings. In the course of the trial, Galilei was found guilty and sentenced to house arrest for the rest of his life. All in all, Galileo is a frequent guest in our blog. Besides his life, we have already reported about his astronomical…
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astronomy
Abu Ma’shar – the Greatest Astronomer of Baghdad

Abu Ma’shar – the Greatest Astronomer of Baghdad

Tabea Tietz
Dear reader, we’ve realized that our daily blog on History of Science somehow is focussed on the Western view of history and the World. Of course it’s because we ourselves are part of this Western world of science. Nevertheless, we have also to include scientists and other people important for the history of science, who are not part of this Western canon of science. Today, we begin with the famous Persian astrologer, astronomer, and philosopher Abu Ma’shar al-Balkhi. Probably on August 10, 787, Persian astrologer Abu Ma’shar, Latinized as Albumasar,…
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