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| abstraction > mathematical concept > unit > SI unit > derived SI unit > named derived SI unit > Celsius | 
| Celsius (°C, Centigrade)  | ||||
| subject | fact | |||
| Celsius | has symbol °C | ![]()  | 
| is named after Anders Celsius (1701-1744) | ![]()  | |
| to convert to Kelvin add 273.15 | ![]()  | |
| has boiling point of water 100 | ![]()  | |
| has proposition date 1710 | ![]()  | |
| has base unit K | ![]()  | |
| has synonym Centigrade | ![]()  | |
| has triple point of water 0.01 | ![]()  | |
| has absolute zero -273.15 | ![]()  | |
| has definition A mercury-in-glass temperature scale. The zero of the scale represents the melting point of ice and the boiling point of water is taken to be 100 degrees. | ![]()  | |
| is an instance of temperature unit | ![]()  | |
| is an instance of named derived SI unit | ![]()  | |
| temperature unit | is a unit of temperature | ![]()  | 
| derived SI unit | has unit defined in terms of derived SI unit via a system of quantity equations | ![]()  | 
| unit | has historical origin | ![]()  | 
| represents | ![]()  | |
| SI unit | is an acronym for Syteme Internationale | ![]()  | 
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