Celsius Celsius scale are defined by absolute zero and the triple point of Vienna Standard Mean Ocean Water (VSMOW), a specially purified water. This definition also precisely relates the Celsius scale to the Kelvin scale, which defines the SI base unit of thermodynamic temperature with symbol K. Absolute zero, the lowest temperature possible, is defined as being exactly 0 K and −273.15 °C. The temperature of the triple point of water is defined as exactly . This means that a temperature difference of one degree Celsius and that of one kelvin are exactly the same. In 1742, Swedish astronomer Anders Celsius
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