Edith Wharton on Spreading Light

Rocks and minerals don’t simply reflect light. They play with it and interact with light as both a wave and a particle.

Invisible cloaks. Ghost imaging. Scientists are manipulating light in ways that were once only science fiction.

There’s a speed limit to the Universe: the speed of light in a vacuum. Want to beat the speed of light? Try going through a medium!

Philosophers and scientists spent millennia arguing about the nature of light. It turned out to be stranger than anyone imagined.

If you think about the way a gravitational wave detector works, you might encounter a paradox. Here’s the solution. One of the greatest scientific achievements in all of human history […]