Scale of temperature the Swedish astronomer Anders Celsius (1701–1744), who developed a similar temperature scale two years before his death. The degree Celsius (°C) can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature "interval "(a difference between two temperatures or an uncertainty). From 1744 until 1954, 0 °C was defined as the freezing point of water and 100 °C was defined as the boiling point of water, both at a pressure of one standard atmosphere. Although these defining correlations are commonly taught in schools today, by international agreement the unit "degree Celsius" and
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