Absolute zero

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Notion

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Science and technology

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What Wikipedia says

Absolute zero is the theoretically coldest temperature, a state at which a system's internal energy, and in ideal cases entropy, reach their minimum values. The Kelvin scale is defined so that absolute zero is 0 Kelvin, equivalent to −273.15 °C on the Celsius scale, and −459.67 °F on the Fahrenheit scale.

Excerpt from the Wikipedia article “Absolute zero”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Gas_thermometer_and_absolute_zero.jpg: Guy vandegrift derivative work: Pierre cb, CC0, via Wikimedia Commons.