Physicists have finally watched positronium, a short‑lived atom made of an electron and its antimatter twin, behave like a rippling quantum wave instead of a tiny billiard ball. In a set of ...

An intense X-ray beam (in pink) is focused into a small spot on a single nanoscale grain of a platinum electrode (highlighted within the droplet). Diffraction interference patterns from that grain ...

The program demonstrates properties of these waves, including diffraction and interference, using various experiments. It concludes with an overview of radar technology, illustrating how it tracks ...