Quotes About Cryogenic

I routinely get e-mails from readers who are disgusted because they feel the race card is played too much and inappropriately. (By the way, can someone put the phrase 'race card' in a cryogenic chamber and never thaw it? It demeans what is still a real struggle).

Laser cooling opened a new route to ultralow temperature physics. Laser cooling experiments, with room temperature vacuum chambers and easy optical access, look very different from cryogenic cells with multi-layer thermal shielding around them.