Mercury-in-glass thermometer ushered in a new era of accuracy and precision in thermometry, and is still to this day regarded as one of the most accurate thermometers available. The thermometer was used by the originators of the Fahrenheit and Celsius scales. Anders Celsius, a Swedish scientist, devised the Celsius scale, which was described in his publication "The origin of the Celsius temperature scale" in 1742. Celsius used two fixed points in his scale: the temperature of melting ice and the temperature of boiling water. This wasn't a new idea, since Isaac Newton was already working on something similar. The distinction of Celsius
Gabriel Daniel accuracy, Daniel had the advantage of consulting valuable original sources. His "Histoire de la milice française", etc. (1721) is superior to his "Histoire de France". Daniel also wrote a reply to Pascal's "Provincial Letters", entitled "Entretiens de Cleanthe et d'Eudoxe sur les lettres provinciales" (1694); two treatises on Descartes' theory as to the intelligence of the lower animals, and other works. Gabriel Daniel Gabriel Daniel (8 February 1649 – 23 June 1728) was a French Jesuit historian. Born in Rouen, he was educated by the Jesuits, entered the order at the age of eighteen, and became superior at Paris. He