Celsius Celsius The Celsius scale, also known as the centigrade scale, is a temperature scale used by the International System of Units (SI). As an SI derived unit, it is used by all countries except the United States, the Bahamas, Belize, the Cayman Islands and Liberia. It is named after the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale or a unit to indicate a difference between two temperatures or an uncertainty. Before being renamed to honor Anders Celsius in 1948, the unit was
Planck temperature scale can convert it to 192.8 cµy"T". These units are somewhat comparable to that of that of the Kelvin scale. When using cµy"T", 0 is absolute zero, and 1 × 10 is the Planck temperature. 1 × 10 cµy"T" is a perfect base ten number as opposed to 1.417 × 10 K, 1.417 × 10 °C, or 2.550 × 10 °F. Each centimicroyocto plank temperature is equal to one 100 nonillionth of the Planck temperature. Planck temperature scale The Planck temperature scale is an absolute temperature scale using natural units. On this scale, 0 is absolute zero, and 1 is the