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

Ten years ago today, on Sept. 14, physicists detected gravitational waves rippling through the cosmos for the first time. The roots of this discovery date back a century. Albert Einstein's general ...

The world's most sensitive table-top interferometric system—a miniature version of miles-long gravitational-wave detectors like LIGO—has completed its first science run. Subscribe to our newsletter ...

Newton finally suggested that it might be both, without being able to prove it. In the 19th century, several physicists in various experiments showed that light actually consists of waves. But around ...

In September 2015, a vibration lasting just one-fifth of a second changed the history of physics. It was the first direct detection of gravitational waves — perturbations in the geometry of space-time ...

We finally know the forces behind an 80-foot-tall wall of water that rocked the North Sea in 1995. By Laura Baisas Published Aug 5, 2025 12:30 PM EDT Get the Popular Science daily newsletter💡 ...

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