angle coupling
11shaft coupling — ▪ machine part in machinery, a device for providing a connection, readily broken and restored, between two adjacent rotating shafts. A coupling may provide either a rigid or a flexible connection; the flexibility may permit misalignment of… …
12Aperture-to-medium coupling loss — In telecommunication, aperture to medium coupling loss is the difference between the theoretical gain of a very large antenna, such as the antennas in beyond the horizon microwave links, and the gain that can be realized in practice. Note 1:… …
13inertia coupling — A form of instability that manifests itself during maneuvers, especially in the pitching and yawing motions. It is particularly common during rolling at very rapid rates and high g rolling pullouts either at very low indicated air speeds or at… …
14Dimensionless physical constant — In physics, a dimensionless physical constant (sometimes fundamental physical constant) is a universal physical constant that is dimensionless having no unit attached, so its numerical value is the same under all possible systems of units. The… …
15Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …
16Solid-state nuclear magnetic resonance — (NMR) spectroscopy, characterized by the presence of anisotropic (directionally dependent) interactions.IntroductionBasic conceptsA spin interacts with a magnetic or an electric field. Spatial proximity and/or a chemical bond between two atoms… …
17Equine conformation — [original research?] Parts of a horse Equine conformation evaluates the degree of correctness of a horse s bone structure, musculature, and its body proportions in relation to each other. Undesirable conformat …
18Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …
19Insect wing — Original veins and wing posture of a dragonfly. Hoverflies hovering to mate …
20Racah W-coefficient — Racah s W coefficients were introduced by Giulio Racah in 1942. [G. Racah, Theory of Complex Spectra II , Physical Review, vol. 62, pp. 438 462 (1942).] These coefficients have a purely mathematical definition. In physics theyare used in… …
