Stories by Jearl Walker

More about polarizers and how to use them, particularly for studying polarized sky light

Studying polarized light with quarter-wave and half-wave plates of one's own making

Wonders of physics that can be found in a cup of coffee or tea

The salt fountain and other curiosities based on the different density of fluids

Hot water freezes faster than cold water. Why does it do so?

Drops of water dance on a hot skillet and the experimenter walks on hot coals

How to create and observe a dozen rainbows in a single drop of water