Joseph-Nicolas Delisle

Anders Celsius and the Celsius Scale of Temperature

Anders Celsius and the Celsius Scale of Temperature

On November 27, 1701, Swedish astronomer, physicist and mathematician Anders Celsius was born. He is famous for the temperature scale he developed and which is named after him. Besides the U.S. that measures temperature according to the scale developed by Fahrenheit, Celsius’ original scale was adopted as the international standard and is still used in almost all scientific work. Anders Celsius – Early Years Anders Celsius was born in Upsala, Sweden, the son of an…
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Jérôme Lalande – Astronomer in Times of the Enlightenment and the French Revolution

Jérôme Lalande – Astronomer in Times of the Enlightenment and the French Revolution

On July 11, 1732, French astronomer, freemason and writer Jérôme Lalande was born. Lalande is best known for having determined the Moon’s parallax from Berlin for the French Academy in 1751. His planetary tables, into which he introduced corrections for mutual perturbations, were the best available up to the end of the 18th century. Jérôme Lalande – Early Years Jérôme Lalande first studied at the Jesuit College in Lyon and later went…
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