It was not until the 19th century that scientists managed to liquefy gases by cooling them to extreme temperatures. Nowadays, the use of such processes is undeniable, and it is now impossible to visit a hospital without coming face-to-face with a liquid oxygen tank. Liquid nitrogen is also widely used in this environment to conserve body fluids such as blood or sperm, in addition to eliminating potentially malignant skin lesions such as warts.
Did you know?
- Liquid nitrogen is produced directly from ambient air liquefied after distillation separates its various components.
- It has been used since 1902 as a source of energy to propel a cryogenic motor vehicle.
- It is the basis for a new concept in ecological funerals whereby the corpse is dipped in liquid nitrogen and then turned into fine particles.
- It is used to cool certain materials to produce a state of superconductivity.