IN GREEK mythology, Echo was a mountain nymph who lost her voice and was condemned to repeat only the words of others. Now science is poised to silence the sprite completely. A group of physicists, ...

For more than 50 years, scientists have theorized that a special kind of reflection known as time reflections have existed in the realm of quantum mechanics. However, proving the existence of this ...

No, I am not sitting in my home theater at 6:00 a.m., ruminating about how the pattern on the wall from the lighting sconce looks different from the back row. This article is about sound reflections.

Physicists have finally confirmed a phenomenon that sounds like pure science fiction: waves that appear to bounce off a ...