A YouTuber has created what he claims is the world's strongest handheld laser, and it's powerful enough to cut through ...

To reach Earth’s closest star system, Alpha Centauri, scientists are building a laser-powered spacecraft. To pull off interstellar travel, a spacecraft must be very light; therefore, it’s essential to ...

Lenses are maybe the most commonly encountered optical pieces of equipment. For example, camera lenses focus light to form ...