If the lens is a plano-convex the focal length is twice the radius of its spherical surfaces.
The two examples with plano-convex cross-sections were unmodified on the plano face except for retouch along the edges.
In most plano-convex examples, the plane face is unmodified except for retouch.
plano-convex (L)—a term used to describe an object that is flat on one face and convex on the other.
But by passing through the plano-convex glass r in their way they form that extremity of the image at b.
This experiment is performed with the help of the plano-convex lens, a, and the rays pass through a very narrow aperture at b.
A B, is a plano-convex lens, being flat on one side, and convex on the other.
In fact, a plano-convex crystal lens has been found among the ruins of Nineveh.
The fourth glume is coriaceous or crustaceous, plano-convex, bisexual, 5-nerved and paleate; palea is as long as the glume.
Berry red, containing two plano-convex seeds enveloped in arils.