A jet is a stream of fluid that is projected into a surrounding medium, usually from some kind of a nozzle, aperture or orifice.
In the field of medicine, you can find liquid jets for example in injection procedures or inhalers.
Industry uses liquid jets for waterjet cutting, for coating materials or in cooling towers.
But they also play a crucial role in research, for example in the study of proteins,[3] phase transitions,[4] extreme states of matter,[5] laser plasmas,[6] High harmonic generation,[7] and also in particle physics experiments.
Microscopic liquid jets have been studied for their potential application in noninvasive transdermal drug delivery.