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
Frank L. Anders Frank L. Anders Frank LaFayette Anders (November 10, 1875 – January 23, 1966) was a United States Army soldier who received the Medal of Honor for actions during the Philippine-American War. He went on to become a noteworthy engineer, businessman, amateur military historian and politician. Anders was born in Fort Abraham Lincoln, Dakota Territory, in what is now Fort Abraham Lincoln State Park, North Dakota. His father, formerly a Union Army soldier died of complications related to his wounds in 1890, and Anders, at age 15 began work with the Northern Pacific Railroad and became a machinist. In 1894 Anders