Physicists have finally confirmed a phenomenon that sounds like pure science fiction: waves that appear to bounce off a sudden change in time rather than a surface in space. The effect, known as a ...

We might not think too much about the sound design in some of our favorite films, but it undeniably plays a huge part. Just ...

Light that twists as it travels and materials whose internal order is knotted like a pretzel are starting to collide in the lab, and the result is a new class of strange, topological effects. Instead ...