Search results
Zero kelvin (−273.15 °C) is defined as absolute zero. Absolute zero is the lowest limit of the thermodynamic temperature scale; a state at which the enthalpy and entropy of a cooled ideal gas reach their minimum value.
- Absolute Zero in Kelvin, Celsius, and Fahrenheit
- How Absolute Zero Works
- Can We Ever Reach Absolute Zero?
- Coldest Temperature Ever Recorded
- Negative Kelvin Temperature
- References
Absolute zero is 0 K, -273.15 °C, or -459.67 °F. Note the Kelvin temperature does not have a degree symbol. This is because the Kelvin scale is an absolute scale, while the Celsius and Fahrenheit scales are relative scales based on the freezing point of water.
One common misconception about absolute zero is that matter stops moving or freezes into place. Theoretically, absolute zero is the lowest possible temperature, but it isn’t the lowest possible enthalpy state. This is because absolute zero is defined for an ideal gas. At very low temperatures, real matter deviates from ideal gas behavior. At absolu...
According to the laws of thermodynamics, it is not possible to reach absolute zero only using thermodynamic methods. We can get very, very close to absolute zero, but can’t ever quite reach it, thanks largely to the Heisenberg Uncertainty Principle. For any particle, you can’t know its momentum and exact position. At absolute zero, the momentum is ...
It may surprise you to learn the coldest temperatures ever recorded were produced in labs here on Earth. Because of background radiation, deep space isn’t really all that cold (2.73 K). So far, the Boomerang nebula is the coldest place in nature, with a temperature of about 1 K.
While we can’t reach absolute zero, in 2013 researchers made a quantum gas of potassium atoms that achieved negative Kelvin temperatures in terms of motion degrees of freedom. Although it’s counter-intuitive, negative temperatures aren’t actually colder than absolute zero. In fact, they might be considered infinitely hotter than a positive temperat...
Arora, C. P. (2001). Thermodynamics. Tata McGraw-Hill. ISBN 978-0-07-462014-4.Medley, Patrick, et al. (May 2011). “Spin Gradient Demagnetization Cooling of Ultracold Atoms.” Physical Review Letters. 106. doi.org/10.1103/PhysRevLett.106.195301Merali, Zeeya (2013). “Quantum Gas Goes Below Absolute Zero.” Nature. doi:10.1038/nature.2013.12146Sep 28, 2024 · Absolute zero, temperature at which a thermodynamic system has the lowest energy. It corresponds to minus 273.15 degrees Celsius and to minus 459.67 degrees Fahrenheit. While all molecular movement does not cease at absolute zero, no energy from that motion is available for transfer to other systems.
- The Editors of Encyclopaedia Britannica
Sep 11, 2014 · Absolute zero is at -273.15 Celsius, or -459.67 Fahrenheit. The Kelvin temperature scale uses the same size degree as Celsius, but has its zero set to absolute zero. To convert from Celsius to Kelvin, add 273.15 to the Celsius reading.
May 4, 2021 · By definition, absolute temperature is a temperature reading reported using a temperature scale where 0 is absolute zero. In other words, it is the temperature of an object using an absolute temperature scale. The two absolute temperature scales are Kelvin (metric) and Rankine (English).
Jul 12, 2024 · Absolute zero, technically known as zero kelvins, equals −273.15 degrees Celsius, or -459.67 Fahrenheit, and marks the spot on the thermometer where a system reaches its lowest possible energy, or thermal motion.
Nov 27, 2019 · 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. This corresponds to zero Kelvin, or minus 273.15 C. This is zero on the Rankine scale and minus 459.67 F.
