For a century, quantum theory has passed every experimental test, but physicists can’t agree on how to use it to paint a ...

This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to ...

A survey of more than 1,000 physicists finds deep disagreements in what quantum theories mean in the real world ...

Quantum physics underlies technologies from the laser to the smartphone. The International Year of Quantum marks a century of scientific developments.

Neutrinos Are Shrinking, and That’s a Good Thing for Physics A new estimate of the ghostly particle’s maximum possible mass brings physicists a tad closer to understanding the universe.