Application
In manufacturing processes, the liquid air product is fractionated into its constituent gases in either liquid or gaseous form, as the oxygen is especially useful for use in fuel gas welding and cutting, and the argon is useful as an oxygen-excluding shielding gas in gas tungsten arc welding. Liquid nitrogen is useful in various low-temperature applications, being nonreactive at normal temperatures (unlike oxygen), and boiling at 77 K (−196 °C; −321 °F).
During World War II, Nazi Germany reportedly experimented with a bomb made from liquid air and coal dust.
Read more about this topic: Liquid Air
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