The best flashlight is the one you have on you – but it sure helps if your flashlight is easy to bring with you everywhere. That's where the ED08 from Rodman scores major points: it's roughly the size ...

Laboratory of Behavioral Ecology and Evolution at Seoul National University Light and foraging ants seem totally unrelated, but they have one thing in common: they travel along time-reducing paths.

Shanghai Optics manufactures high quality plano-convex lens; optical lenses with a positive focal length. These all-purpose lenses are available in a wide variety of sizes, substrates, and coatings, ...

Injection molding: a lot harder than you'd think! I picked up a benchtop injection molding machine to play with, and thought ...

Biconvex lenses also known as double convex lenses are simple optical lenses with two convex spherical surfaces, surfaces which bulge out from the center. These two convex surfaces have the same ...

We compare and contrast concave and convex lenses by drawing ray diagrams. In this Closer Look segment on Lenses, we compare and contrast concave and convex lenses by drawing ray diagrams and ...

Save guides, add subjects and pick up where you left off with your BBC account. Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will ...

Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will reduce in speed as it travels through, causing it to change direction. Ray ...