celsius scale
Học thuậtThân thiện
Definition
- Noun:
- A temperature scale: The Celsius scale is a system for measuring temperature. It is defined by setting the freezing point of water at 0 degrees and the boiling point of water at 100 degrees under standard atmospheric pressure.
Usage
- The Celsius scale is used globally for most scientific work and in daily life in most countries around the world.
- It is the scale commonly used in weather forecasts, cooking instructions, and medical measurements (like body temperature) outside of the United States.
Examples
Advanced Usage
- "Degrees Celsius": The standard unit of measurement on this scale, abbreviated as °C.
- The lab must be kept at a constant 22 degrees Celsius.
- Historical Context: Also known historically as the centigrade scale, from "centi-" (hundred) and "grade" (step), referring to the 100-degree interval between the defined points.
Variants and Related Words
- Centigrade (adj/n): An older, synonymous term for the Celsius scale, though "Celsius" is now the preferred name.
- The temperature is 20 degrees centigrade.
- Kelvin scale (n): A related absolute temperature scale where 0 K (zero kelvin) is absolute zero. A change of 1 kelvin is equal to a change of 1 degree Celsius.
Synonyms
- Centigrade scale: (Historical/alternative name)
Notes
- The Celsius scale is named after the Swedish astronomer Anders Celsius, who proposed a similar scale in 1742.
- To convert from Fahrenheit to Celsius, you subtract 32, then multiply by 5/9. To convert from Celsius to Fahrenheit, you multiply by 9/5, then add 32.
Noun
- a temperature scale that defines the freezing point of water as 0 degrees and the boiling point of water as 100 degrees