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

When people think of eyeglasses, they might think of them as a modern innovation–or, at the very least, something that has ...

A lens can be converging (convex) or diverging (concave). The centre of the lens is called the optical centre C. In a ray diagram, a converging lens is drawn as a vertical line with outward facing ...

Most existing water-based liquid lenses operate by changing the curvature of water at the refractive interface, noted the ...

Wondering if computer glasses really help An expert explains how they reduce eye muscle work by 50 ease strain and improve ...

Convex mirrors are small ... such as better vision in low light, hydrophobic camera lenses that repel water, and generally wider fields of view. There have even been claims that removing mirrors ...

Naval aviators know that traffic light as the Improved Fresnel Lens Optical Landing System ... He explains that the 12 cells, stacked in a slight convex curve like a bowed pillar of flashlights ...