Negative refraction of elastic waves has been studied and experimentally demonstrated in three- and two-dimensional phononic crystals, but Bragg scattering is impractical for low-frequency wave ...

This project uses a servo motor and small slinky to demonstrate what a longitudinal wave looks like. Additionally it shows the crests and troughs of that longitudinal wave. It can also be utilized to ...

Earthquakes release waves of energy called seismic waves. They travel through the interior and near the surface of the Earth. P-waves, or primary waves, are the fastest moving type of wave and the ...