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How did Lord Kelvin determine the absolute zero?

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... anything off completely, and despite the fact that all of the gases that Lord Kelvin was working with became liquids when chilled enough, it was still easy to graph temperature vs. pressure (even around room temperature) and then extend the line to find the temperature where the pressure should be zero. read more

Actually Lord Kelvin didn’t determine absolute zero, but he invented a new scale for temperature measurement named Kelvin. At absolute 0 K, it is believed that every activity will be ceased to merely its internal bonding energy. These assumptions came after the invention of Kelvin scale. May the absolute zero assumptions are wrong. read more

Kelvin figured that this would be a much more natural place for “zero” to be, and he carefully measured it (by extending the line) to be around -273.15°C, which is now 0°K (zero degrees Kelvin). read more

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