Are there other ways to cool an object to 77 K (â196 Â°C; â321 Â°F) without use of cryogenic fluids, like liquid nitrogen? Answered
I am looking for a way to be able to keep an object below 77 K, while maintaining an airtight container. This cannot be obtained with cryogenic fluids like liquid nitrogen, as it becomes highly explosive and dangerous. Therefore, I need a way to keep an object below 77 K in an airtight container, safely.