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: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Snowmaking" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Snowmaking</a>