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The degree Celsius (or simply °C) was a unit of temperature named after Earth astronomer Anders Celsius.

The Celsius temperature scale was designed so that the freezing point of water is 0 °C, and the boiling point is 100 °C at one Earth atm, which results in the zero point of the temperature unit Kelvin (or "absolute zero") being at −273.15 °C.

The body function panels in sickbay measured a patient's body temperature in both Celsius and Fahrenheit. (Star Trek: The Original Series)

The replicators aboard a Federation starship like the USS Enterprise-D were calibrated to the Celsius system. (TNG: "The Vengeance Factor", "The Defector")

−291 °Celsius is about eighteen degrees below absolute zero (0 Kelvin), which is a theoretical impossibility, suggesting this was a production mistake and actually meant to be −291 °Fahrenheit (−179 °Celsius).
  • 21 °Celsius was the temperature Humans preferred in order to operate most efficiently, according to Data's observations. (TNG: "Starship Mine")
  • 30 °Celsius was the maximum temperature at which liquefied platinum could remain stable. (ENT: "The Xindi")
  • 32 °Celsius was the average temperature of Deep Space 9 when the Federation took over the station, indicating the temperature preference of Cardassians. (DS9: "Emissary")
  • 39.4 °Celsius was the temperature detected by initial scans made by the USS Grissom of Sector 2 on the Genesis Planet, indicating also that it was a desert terrain with minimal vegetation. (Star Trek III: The Search for Spock)
  • 76 °Celsius was the ambient temperature of both the Federation and Bourget habitat zones, found on board the Nyrian biosphere vessel. (VOY: "Displaced")
Based on the habitat seen on screen, this temperature figure was likely a production mistake and actually meant to be 76 °Fahrenheit (24 °Celsius), which is a comfortable temperature for Humans.
  • 150 °Celsius was the exact constant temperature of a pool of thick swirling ooze the Legarans preferred to inhabit in. (TNG: "Sarek")

Variations in temperature Edit

Although not explicitly stated in terms of "degrees of what", the following temperature references were most likely in Celsius.

  • 20 degree increase of temperature occurred on the planet where Dukat and Sisko were stranded in 2374, when the wind died down, much to the liking of Dukat's Cardassian physiology. (DS9: "Waltz")

See alsoEdit

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