But liquid nitrogen is cold enough for the shift to be dramatically visible. We’d love to see the color shift associated with other cryogens, or see what happens with a blue LED.

Liquid nitrogen is an inert cryogenic fluid with a temperature of -196 °C. The chillers circulate liquid nitrogen within the chamber, allowing quick ethanol chilling to -80°C within an hour.

In 233 total tests on 26 simulated spacesuits, the pressurized liquid nitrogen removed more than 98 percent of the moon dust substitute. Perhaps even more exciting is that the technique caused ...

Liquid nitrogen is used to flash-freeze chicken products at the plant, which employs about 180 people, many of them immigrants fearful of deportation, Kurt Petermeyer, regional administrator for ...