The fact that the cooled compressed air expands upon exiting the machine is also very important -- this, along with impurities in the water, allows nucleation t

The fact that the cooled compressed air expands upon exiting the machine is also very important -- this, along with impurities in the water, allows nucleation to happen immediately as the water exits the nozzles. More info here: https://en.wikipedia.org/wiki/Snowmaking https://en.wikipedia.org/wiki/Snowmaking