The meniscus lens' concave surface faces the first two lens elements, and thus incoming light rays, while the convex surface interfaces with the sensor, focusing light onto the sensing surface.

For simulations, the convex and concave cylinders were assumed to have radii of 4.13 and 6.48 mm, respectively, and a refractive index of 1.507. The PDMS layer was modelled as a 50-μm-thick layer ...

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.

Save guides, add subjects and pick up where you left off with your BBC account. Convex and concave lenses can both be used to correct defects of vision. The most commonly occurring defects of ...

The first hypothesis states that curls can be explained by a greater number of hair cells on the convex side of the hair follicle — that is, the outside edge of the curl — and fewer on the ...