It’s almost officially winter on the Northern Hemisphere. Time for some snow science!
And where better to look for information on snowflakes than… Southern California.
Kenneth Libbrecht, professor of Physics at Caltech, is an expert on snowflakes. He runs SnowCrystals.com, which is a wonderful resource on the science behind snowflakes and snow crystals.
The snowflake primer page is the place to start learning about the properties of snowflakes, such as the hexagonal structure or the different types of crystals.
Another section of the website shows how to make your own snow crystals using styrofoam cups, dry ice, and a coke bottle.
If you’re not that ambitious, at least watch the animations of the growing of lab-controlled snow crystals or have a look at the beautiful photo collection.