What Makes Glass Transparent? What makes glass transparent? Optics for Kids Some exciting projects The Anatomy of a Lens Lesson 1: Refraction at a Boundary Boundary Behavior Refraction and Sight The Cause of Refraction Optical Density and Light Speed The Direction of Bending The Secret of the Archer Fish Lesson 2: The Mathematics of Refraction The Angle of Refraction How Do 3-D Glasses Work? How do 3-D glasses work? How Light Microscopes Work The human eye misses a lot -- enter the incredible world of the microscopic! Explore how a light microscope works. How Sunglasses Work Whether you're hitting the surf or the slopes or just spending a day on the lake, sunglasses are a must-have accessory. A good pair of sunglasses can protect your eyes from harmful UV rays and eliminate irritating glare. Find out if those $10 sunglasses really are as good as the high-cost ones. How Corrective Lenses Work Eyeglasses are one of the most common sights in the world. Learn what goes into creating the lenses and how to read an eyeglass prescription. How Does A Fresnel Lens Work? I have a thin piece of plastic mounted on the back window of my RV. It magnifies things so I can see better when I'm backing up. How can such a thin piece of plastic magnify things? A regular glass magnifying lens would have to be curved on both sides and much thicker. How Autofocus Cameras Work Ever wonder how your camera knows what you're looking at? Understand how autofocus cameras lock on to the object you're photographing! How Cameras Work Digital may be taking over, but optical started it all. A camera is an incredible piece of technology that essentially records light. Take a look inside a single lens reflex camera. How Digital Cameras Work Not too long ago, you had to wait for your film to be developed before you could see the results of your work. In the digital age, it's snap 'n view. If you want to e-mail pictures to friends, post them on a Web site or do your own editing, digital photography is the way to go. Learn what goes on inside a digital camera and what to look for when buying one. How Telescopes Work A telescope can be as simple as a $100 amateur scope or as complicated as the Hubble space telescope. Learn how telescopes work and what to consider if you are thinking about buying one! What Does It Mean When Someone Has 20/20 Vision? What does it mean when someone has 20/20 vision? How Vision Works A fascinating article that describes how your eyes and vision works! How Cameras Work Digital may be taking over, but optical started it all. A camera is an incredible piece of technology that essentially records light. Take a look inside a single lens reflex camera. How Artificial Vision Will Work Over the next several years, artificial vision systems implanted directly on the retina may restore sight for many blind people. Learn all about this emerging and interesting technology! How Night Vision Works Most of us instinctively think of darkness as a "cloak," a way to hide. Night vision has changed all that. So, how can you see someone standing over 200 yards away on a pitch-black night? It's pretty amazing... Learn how various night-vision technologies let you see in the dark. How Photocopiers Work Most of us don't think about what's going on inside a copier while we wait for copies to shoot neatly out into the paper tray. Find out how, in mere seconds, you can produce an exact replica of what's on a sheet of paper! Ray Optics