I wake up in the morning and look in the mirror. I shower and do my hair and makeup in front of a vanity mirror, then get dressed with the help of my full-length mirror. I have three mirrors in my ...

There’s something undeniably mysterious about mirrors. They hang quietly on our walls, reflecting our faces and rooms, yet they have always been linked to far more than vanity. Across cultures and ...

Introduction Can you imagine a bouncy ball that could bounce back and forth between two walls, infinitely—that is, forever? Wouldn't that be amazing? What if, instead of a ball, light was bouncing ...