A B, is a plano-convex lens, being flat on one side, and convex on the other.
If the lens is a plano-convex the focal length is twice the radius of its spherical surfaces.
Berry red, containing two plano-convex seeds enveloped in arils.
But by passing through the plano-convex glass r in their way they form that extremity of the image at b.
plano-convex (L)—a term used to describe an object that is flat on one face and convex on the other.
This experiment is performed with the help of the plano-convex lens, a, and the rays pass through a very narrow aperture at b.
In fact, a plano-convex crystal lens has been found among the ruins of Nineveh.
Other types employ two plano-convex lenses, the curved surfaces nearly in contact; or a concavo-convex and a plano-convex lens.
The holochroal eyes are of two kinds, one with plano-convex and one with biconvex lenses.
The Huygens eyepiece consists of two plano-convex lenses whose focal lengths are in the ratio of three to one.