Difference between Concave vs Convex Lens: Isn’t physics one of those subjects that almost every student is scared of? Well why not, given the complexity of problems and difficulty level of the ...

Looking at the Wave pedal in profile, the front half of the pedal has a concave shape, while the rear of the pedal is sloped back from the axle in a more convex shape.

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.

Recent research now shows for the first time a causal link between the activity of these cells and depth perception. The monkeys were trained to distinguish between concave and convex 3D shapes.