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After reading 3198 websites, we found 6 different results for "What is absolute zero"

the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas

Absolute zero – is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value, taken as 0.

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The coldest theoretically possible temperature

The coldest theoretically possible temperature is absolute zero, which is 0 K on the Kelvin scale, a thermodynamic temperature scale, and −273.15 °C on the Celsius scale.

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the lowest conceivable temperature

Melvyn Bragg and his guests discuss absolute zero, the lowest conceivable temperature.

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as 0 K

Absolute zero, defined as 0 K, is exactly equal to −273.15 °C, or −459.67 °F.

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where no more heat can be removed from a system

Absolute zero is defined as the point where no more heat can be removed from a system, according to the absolute or thermodynamic temperature scale.

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as that temperature where all atomic thermal motion ceases

This is, in fact, why absolute zero is defined as that temperature where all atomic thermal motion ceases.

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