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 ...

A cluster of 7,000 sodium atoms has just been coaxed into behaving as a single, ghostly wave, stretching quantum weirdness into a realm that starts to look uncomfortably like everyday matter. Instead ...

A strange form of matter called a time crystal has fascinated physicists for about a decade. These systems move in repeating cycles, even without a steady external push.

We compare and contrast closed-ended, open-ended, and closed-on-one-end tubes. In this Closer Look segment on Standing Waves, we compare and contrast closed-ended, open-ended, and closed-on-one-end ...

Physicists at the University of Southampton have tested and proven a 50-year-old theory for the first time using electro-magnetic waves. They have shown that the energy of waves can be increased by ...

Metal clusters made of thousands of atoms showed quantum interference, offering new insight into how large objects follow quantum rules.