Synonymer & Information om | Engelska ordet BICONVEX

Exempel på hur man kan använda BICONVEX i en mening

• In his 1567 work La Pratica della Perspettiva Venetian nobleman Daniele Barbaro (1514–1570) described using a camera obscura with a biconvex lens as a drawing aid and points out that the picture is more vivid if the lens is covered as much as to leave a circumference in the middle.
• In the remaining parts of the treatise, Ibn Sahl dealt with parabolic mirrors, ellipsoidal mirrors, biconvex lenses, and techniques for drawing hyperbolic arcs.
• Heads sessile, usually solitary, ± globose to biconvex, 4–8 mm (1/5 inch) in diameter; involucral bracts ± obovate, 2–3 mm long, apex obtuse, minutely toothed.
• The generic name refers to Rincón de los Sauces, where the fossils were discovered, while the specific name, caudamirus, means "amazing in the tail" in Latin, in reference to the unusual shape of the tail vertebrae, especially a strange sequence of procoelous, amphicoelous, opisthocoelous, biconvex and ultimately again procoelous vertebrae shown by one individual.
• In the Pleurodira, these vertebrae are narrow in cross-section and spool-shaped with biconvex centra on one or more of the cervicals.
• 984 — Ibn Sahl completes a treatise On Burning Mirrors and Lenses, describing plano-convex and biconvex lenses, and parabolic and ellipsoidal mirrors.
• Aquilonites has a subdiscoidal, involute shell with a small to very narrow umbilicus, covered by biconvex growth lines and sometimes weak lirae.
• Beyrichoceratoides has a smooth involute discoidal shell with a very narrow umbilicus, non-crenulate biconvex growth lines, and well-developed ventro-lateral salients and deep hyponomic sinus.
• This consists of two air-spaced achromatic doublets arranged back-to-back around a central stop, or four air spaced lens elements in total: the outer pair is biconvex and the inner pair is biconcave; one example is the Celor.
• Tornoceratids are subdiscoidal goniatitids with biconvex growth lines and sutures that form 6 to 10 lobes, the ventral one undivided, the lateral ones originating as subdivisions of external and internal lateral saddle.
• Thalassoceratoidea, formerly Thalassocerataceae, is a superfamily of Late Paleozoic ammonites characterized by their thick-discoidal to subglobular, involute shells with narrow or closed umbilici and biconvex growth striae with ventral sinuses.
• First implanted in 1984, the disc had a biconvex polyethylene nucleus within a radiopaque metal ring that interfaced with two cobalt-chromium-molybdenum alloy endplates, which were coated with calcium phosphate.
• Possible preforms are spherical (ball), near spherical (gob), plano-plano, plano-convex, plano-concave, biconvex and biconcave blanks.
• The shell of this species is biconvex, the altitude about half the diameter, angular at the periphery, whitish, more or less brown-tinted, the base dappled with oblong spots or streaks arranged concentrically, having a dark band along the basal suture, the upper surface sparsely spotted near the periphery, and having a brown band revolving below the suture, usually with a fainter one above it.
• The single-piece wing was of mahogany with Dural inserts at the leading and trailing edges; it was of biconvex section and of tapered planform with an unswept half-chord line.
• It is packaged as white, round, biconvex, uncoated tablets, with each tablet containing 30 mg of pseudoephedrine hydrochloride (PSE), 500 mg of paracetamol (acetaminophen) and 2 mg of chlorpheniramine maleate (CPM) as the active ingredients.
• Sharpirhynchia sharpi has a small shell, subtrigonal to transverse or laterally elongate in adults; unequally biconvex, dorsal valve more convex than ventral one, subglobose in profile.
• Athyris is a brachiopod genus with a subequally biconvex shell that is generally wider than long and a range that extends from the Silurian into the Triassic.
• Discorbis produces a smooth plano-convex to unequally biconvex trochospiral test (shell) with a flattened umbilical side, taking up about two and a half whorls, with seven to ten chambers in the final whorl.
• Hedbergella is an extinct genus of planktonic foraminifera from the Cretaceous, described by Loeblich and Tappan, 1961, as:

  Test free, trochospiral, biconvex, umbilicate, periphery rounded with no indication of keel or poreless margin; chambers globular to ovate; sutures depressed, radial, straight or curved; wall calcareous, finely perforate, radial in structure, surface smooth to hispid or rugose; aperture an interiomarginal, extraumbilical-umbilical arch commonly bordered above by a narrow lip or spatulate flap,.

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