In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

In a ray diagram, a concave lens is drawn as a vertical line with inward facing arrows to indicate the shape of the lens.

Concave Convex Mirror has been created for the Alt Material exhibition, part of NGV's Melbourne Design Week 2020. The framework of Concave Convex Mirror is made of mild steel spun over a custom ...

Are flat pedals better if the platform is convex? Concave? Why not both? While the internet argues about which pedal design provides the best grip and feel, OneUp has been testing prototypes of ...