4.22 kelvin
4.22 KTemperature · definition
Celsius and Fahrenheit have shifted zero points. Differences are useful; “twice as hot” in °C or °F is not a physical temperature ratio.
Temperature
Just how hot is 4.22 kelvin?
Deep cold
4.22 K
4.22 kelvin
Celsius and Fahrenheit have shifted zero points.
4.22 KTemperature
0 K · absolute zero
Boiling helium
Boiling helium is helium in its liquid state at its normal boiling point under standard atmospheric pressure.
4.22 KTemperature
0 K · absolute zero
Celsius and Fahrenheit zero points are offsets. Compare temperature differences, not ratios in °C or °F. The kelvin axis starts at absolute zero.
A little perspective
4.22 kelvin is the same as the temperature of boiling helium.
Measurements, assumptions & sources +
4.22 kelvin
Temperature: 4.22 K; definition.
Celsius and Fahrenheit have shifted zero points. Differences are useful; “twice as hot” in °C or °F is not a physical temperature ratio.
Boiling helium
Temperature: 4.22 K; approximate.
Approximate normal boiling point of helium at one atmosphere.
NIST Chemistry WebBook — Helium phase data
The marked temperature is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 4.22 kelvin with the temperature of boiling helium. The notes below explain how each value was chosen.
Boiling helium
4.22 KTemperature · approximate
Approximate normal boiling point of helium at one atmosphere.
- Comparing
- Temperature ↔ Temperature
- Relative size
- We compare temperatures using a difference in kelvins, not a ratio.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- The temperature of boiling helium: This is an estimate; check the notes for its rounding and uncertainty.
Compare temperature differences in kelvins; Celsius and Fahrenheit ratios are not meaningful.
-268.93 °Cdegrees Celsius
-452.07 °Fdegrees Fahrenheit
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