Mirrors can actually create light through the magic of quantum weirdness

If you take two flat mirrors and place them very close together, the virtual particles that pop into existence between the mirrors will actually force them together. But that's nothing compared to when mirrors approach the speed of light. » 5/29/11 9:00am 5/29/11 9:00am

Are virtual particles for real?

The universe is apparently filled with particles and anti-particles dancing into and out of existence. Are they for real? In this week's "Ask a Physicist," we'll find out. » 1/13/11 9:00am 1/13/11 9:00am