Difference between revisions of "Absolute zero"
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| − | Absolute zero is the | + | Absolute zero is the practical minimum of temperature, defined as 0 degrees Kelvin on the absolute temperature scale (the zero on the Kelvin scale has had to adjust, slightly, as measurements of absolute zero are refined). This corresponds to -273.15 degrees Celsius and -459.67 degrees Fahrenheit. At absolute zero, all thermal motion (i.e. the movement of molecules in a gas, atoms in a crystal) ceases. |
Revision as of 16:23, February 22, 2007
Absolute zero is the practical minimum of temperature, defined as 0 degrees Kelvin on the absolute temperature scale (the zero on the Kelvin scale has had to adjust, slightly, as measurements of absolute zero are refined). This corresponds to -273.15 degrees Celsius and -459.67 degrees Fahrenheit. At absolute zero, all thermal motion (i.e. the movement of molecules in a gas, atoms in a crystal) ceases.