Optics

Optics is the study of the properties and behavior of light. In this section you can learn about everything from holograms to lasers and lenses.

How Laser Communication Works

Laser communications may be a boon for outer space and here on Earth. Learn more about laser communications at HowStuffWorks.com. See more »

How Kaleidoscopes Work

Kaleidoscopes have been around since the early 1800s. But how do these glass gadgets operate? Read more about kaleidoscopes at HowStuffWorks. See more »

All colors that you see fall into the visible light spectrum. Learn about the colors in the visible light spectrum in this article. See more »

How Scanning Electron Microscopes Work

Scanning electron microscopes give scientists an incredible level of magnification. Learn about scanning electron microscopes. See more »

How Laser Analysis Works

Laser analysis is advancing everything from forensics and archaeology to health care and art history. Learn how laser analysis technology works. See more »

Is there a light 10 billion times brighter than the sun?

A synchrotron can produce light that can be used to "read" ancient texts that have been badly damaged. Find out what a synchrotron is and how it is used. See more »

Is it possible to make a cloaking device?

Cloaking technology can achieve invisibility by bending light waves around an object. Find out how a cloaking device works and learn about cloaking technology limitations. See more »

How Holograms Work

Holograms are 3-D images that have been projected and captured on a 2-D surface. Find out how holograms work and see how a hologram is produced. See more »

Invisibility Cloak For Real This Time?

We first reported on the possibility of an invisibility cloak last year. Now a different invisibility cloak is making the news -- one that uses metamaterials to redirect light away from the wearer. See more »

How Invisibility Cloaks Work

With optical-camouflage technology, the invisibility cloak is a reality. Learn what it is. See more »