Does a video show a massive metallic UFO orb over a volcano in Mexico? No, that's not true: The round object in the video is ...

When light enters a concave lens from one side, it scatters on the other side. Concave lenses look like an hourglass. On the other hand, convex lenses are shapes that curve outward.

Curving a standard CMOS image sensor into a convex or concave shape could improve its imaging capabilities (Courtesy: Simona Lombardo) It’s not just televisions and smartphones that are looking ...