refraction

This is what a sunset in Rio de Janeiro looks like right now, and it’s all thanks to that volcano erupting in Chile…

Here's a fun old trick anyone can do: draw arrows on a piece of paper, put a glass in front of those arrows and pour…

It's easier than you think to create these weirdly beautiful colorscapes.

Everyone knows you don't get pictures of rainbows this beautiful, without sacrificing a few leprechauns. Like,…

Refraction is a mind-bending idea. Light passes through a clear object, and it comes out the other side, inverted.…

We've all seen reflection used in photography—like when a lake doubles as a mirror to the sky. For this week's…

While some work toward an invisibility cloak, University of Illinois professor Nicholas Fang is taking steps to…