Former elementary school teacher Matt Shurtleff — known to many students as “Matt the Mad Scientist” — demonstrated how sound waves move using water and lasers.

"Waves on Water" explores the dynamics of waves, including their formation, movement, and interaction with the environment. It explains how wind generates waves, how these waves travel across water, ...

Alfvén accelerator: artist’s illustration of how Alfvén waves in Earth’s magnetic field can accelerate the electrons responsible for intense auroras. (Courtesy: Austin Montelius/University of Iowa) ...

Teflon objects (orange cylinders) were placed in a waveguide with a rectangular cross-section. Then, an electromagnetic signal (blue wavefront) was injected from the right to extract information about ...