Meteorology known as the first "anemometer". In 1607, Galileo Galilei constructed a thermoscope. In 1611, Johannes Kepler wrote the first scientific treatise on snow crystals: "Strena Seu de Nive Sexangula (A New Year's Gift of Hexagonal Snow)". In 1643, Evangelista Torricelli invented the mercury barometer. In 1662, Sir Christopher Wren invented the mechanical, self-emptying, tipping bucket rain gauge. In 1714, Gabriel Fahrenheit created a reliable scale for measuring temperature with a mercury-type thermometer. In 1742, Anders Celsius, a Swedish astronomer, proposed the "centigrade" temperature scale, the predecessor of the current Celsius scale. In 1783, the first hair hygrometer was demonstrated by
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