electromagnetism

The reality of disembodied souls would necessarily overturn everything we know about physics. Any scientist would be itching to find evidence for the supernatural—evidence that never seems to turn up, despite the most adamant and most confident protestations of believers.

PART 3 How are laser beams produced? Laser beams are the product of stimulated emission of light. But what is stimulated...

What in the world is laser? PART 1     We use them to point at things in a slide presentation; snipers use them...