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The Coolest Pressure Sensor
Down the street from Phase Sensors’ facility in Edmonton, Canada is the coldest place in the world. Dr. John Davis operates a dilution refrigerator utilizing a demagnetization stage to probe fundamental physics at the lowest obtainable temperatures. Dilution refrigerators are used to provide sub-Kelvin temperatures (less than -272.15°C) for fundamental physics and materials experiments. A Dilution refrigerator utilizes a multiphase mixture of 3He and 4He where evaporation of 3He from the liquid phase to the gas phase cools the chamber.
August 3, 2021