1. Cryogenic temperature range
In the field of cryogenics, the emphasis is on temperature, rather than on the flow of energy transferred, which remains very low (intensive variable predominates over extensive variable).
The temperature range is usually given by local 100 K (near the liquefaction of oxygen or air at atmospheric pressure) up to 20 nK, the temperature reached by Lounasmaa in 1983 by nuclear adiabatic demagnetization. An experiment carried out in 1990 by researchers...
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Cryogenic temperature range