In physics, cryogenics is the study of the production of very low temperature (below −150 °C, −238 °F or 123 K) and the behavior of materials at those temperatures. A person who studies elements under extremely cold temperature is called a cryogenicist. Rather than the relative temperature scales of Celsius and Fahrenheit, cryogenicists use the absolute temperature scales. These are Kelvin (SI units) or Rankine scale (Imperial & US units).

Contents

• 1 Definitions and distinctions
• 2 Etymology
• 3 Industrial application
  • 3.1 Cryogenic processing
  • 3.2 Fuels
• 4 Applications
• 5 Production
• 6 Detectors
• 7 See also
• 8 References
• 9 Further reading
• 10 External links

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