The danger of Liquid Nitrogen comes when you expose your skin to the liquid for longer periods.
Because
of its extremely low temperature, careless handling of liquid nitrogen
and any objects cooled by it may result in cold burns. Special gloves
should be used while handling.
Liquid Nitrogen
is nitrogen gas in a liquid state. It remains at an extremely low
temperature and needs to be handled with extreme care. It is a
colourless clear liquid with a density of 0.807 g/ml at its boiling
point of -195.79 °C. Liquid nitrogen is a cryogenic fluid that can cause
rapid freezing on contact with living tissue. Because of its extremely
low temperature, careless handling of liquid nitrogen and any objects
cooled by it may result in cold burns. Special gloves should be used
while handling.
However, shockingly, this guy in the video shows that Liquid Nitrogen
actually does not harm living tissue, if handled carefully. The danger
of Liquid Nitrogen comes when you expose your skin to the liquid for
longer periods. In this case the liquid touches the skin for less than a
second, but due to the Leidenfrost effect, it does not harm the skin.
Watch the video below for more information.