Sir James Dewar, Scottish chemist, would be nominated for the Nobel 8 times, but you probably know him for his most famous invention, which never made him a penny, developed to hold ultra-cold liquified gases.
You probably own a "Dewar vessel," but you know it as a Thermos™.
Let's talk about it.
media.tenor.com
Alt: a person is holding an insulated container of liquid nitrogen. They pour the liquified gas over an open human hand in a lab setting. The Leidenfrost effect prevents any serious injury, as the liquid boils off before transferring much heat.
