plano-convex


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plano-convex

A shape of sun-dried brick, flat on one side, convex on the other, typical of early Mesopotamian construction.
References in periodicals archive ?
5 cm diam, hemispherical to plano-convex, with obtuse umbo, dark brown in the centre fading towards camel brown at margin, fibrillose, margin entire; surface smooth, shiny, viscid.
b A pair of plano-convex lenses with plano surfaces bonded together
The simple plano-convex lens can easily be made from a piece of green float glass where it is only necessary to grind a very shallow front curve and a rear surface reasonably flat; the lens does not have to be test plated or figured as a good polish and careful grinding is all that is necessary.
where ([xi],[eta],[zeta]) are the Cartesian coordinates of the point on the plano convex lens and n is the refractive index of plano-convex lens and f is the focal length.
1 mm wide, dark brown, obovate to elliptic-obovate, flattened-trigonous to more or less plano-convex or even slightly concavo-convex, rounded to more or less cuneate to a sessile base, rounded to the apex, with an indistinct collar and sometimes a very short apiculus, finely papillose; style branches reddish, feathery with elongate papillae.
2] Laser Optics feature zinc selenide positive focusing lenses in plano-convex, plano-concave, and meniscus configurations in 0.
The shape of the nucleus is plano-convex, with the curved face directed ventrally towards the limb surface.
CVI QuantaGlas(TM) singlets are available in plano-concave, plano-convex, bi-concave, and bi-convex configurations in either UV grade fused silica or BK7 glass.
001" tolerances in plano-convex, -concave, meniscus, and dome shapes, including custom edge finishes
Light from the convex mirror is fed through a 2-inch-diameter plano-convex field lens that corrects for lateral color error and astigmatism.
Later research into this effect revealed a surprising result, that is, the high reduction of the chromatic aberration of a single plano-convex objective lens by placing an achromatic doublet lens at some position along the focal length, and inside the prime focus itself.
The same trend is seen in the following Early Dynastic period with plano-convex bricks.