sphericity
81Honing (metalworking) — Honing is a manufacturing process that produces a precision surface on a workpiece by scrubbing an abrasive stone against it along a controlled path. Honing is primarily used to improve the geometric form of a surface, but may also improve… …
82Talyrond — A Talyrond is a sphericity measuring device, originally a trade name from Taylor Hobson. It is a standard per ANSI B 3.12 1975 …
83Sphärizität (Geologie) — In der Geologie ist Sphärizität eine Kenngröße dafür, wie kugelförmig ein Körper ist. Inhaltsverzeichnis 1 Definition 2 Anwendung 3 Sphärizität bekannter Körper 4 Links …
84ИНФРАКРАСНЫЕ РАСХОДИМОСТИ — в квантовой теории поля расходимости в рамках теории возмущений амплитуд (и сечений) процессов с безмассовыми частицами, возникающие при интегрировании по области малых энергий виртуальных или реальных частиц (квантов поля). Поскольку И. р.… …
85aspheric — [ā΄sfir′ik] adj. designating or of a lens or mirror made so that it is not perfectly spherical, as to minimize spherical aberration: also aspherical * * * a·spher·ic (ā sfîrʹĭk, ā sfĕrʹ ) also a·spher·i·cal ( ĭ kəl) adj. Varying slightly from… …
86hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …
87isotope — isotopic /uy seuh top ik/, adj. isotopically, adv. /uy seuh tohp /, n. Chem. any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in… …
88Apollonius of Perga — born с 240 BC, Perga, Anatolia died с 190 BC, Alexandria, Egypt Mathematician known as The Great Geometer. His Conics was one of the greatest scientific treatises of the ancient world. In it he introduced the terms parabola, ellipse, and… …
89sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
90Cassegrain reflector — ▪ astronomical instrument in astronomical telescopy, an arrangement of mirrors to focus incoming light at a point close to the main light gathering mirror. The design was proposed in 1672 by French priest Laurent Cassegrain. In the… …
