fake snow /oss/taxonomy/term/4273/all en Let It (Fake) Snow! /oss/article/technology-general-science/let-it-fake-snow <p>Have you ever wondered how ski hill operators make snow? Actually, they don't make snow, they make tiny beads of ice, each one about one ten-thousandth of an inch in diameter. It all starts with spraying water from a hose together with compressed air. The air is needed because as it quickly expands, its temperature drops. This is known as the Joule-Thomson effect named after James Prescott Joule and William Thomson, who is better known as Lord Kelvin, having been knighted by Queen Victoria.</p> Fri, 01 Jan 2021 17:00:00 +0000 Joe Schwarcz PhD 8531 at /oss The Right Chemistry: Space, Artificial Snow and Diapers /oss/article/videos/right-chemistry-space-artificial-snow-and-diapers <p></p> Video of Dr. Joe Schwarcz: On space, artificial snow and diapers Thu, 09 Jan 2020 21:44:05 +0000 Joe Schwarcz PhD 8076 at /oss