gunn frequency
71Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… …
72Semiconductor device — Semiconductor devices are electronic components that exploit the electronic properties of semiconductor materials, principally silicon, germanium, and gallium arsenide. Semiconductor devices have replaced thermionic devices (vacuum tubes) in most …
73Dál Riata — Dalriada redirects here. For the neighbouring Irish kingdom sometimes called Dalaradia, see Dál nAraidi. For other uses, see Dalriada (disambiguation). Satellite image of Scotland and Ireland showing the approximate area of Dál Riata (shaded).… …
74Something for Kate — 24 February 2008, Something For Kate at the Corner Hotel, Richmond, Victoria. Background information Origin Melbourne, Australia …
75Cataract — For other uses, see Cataract (disambiguation). Cataract Classification and external resources Magnified view of cataract in human eye, seen on examination with a slit lamp using diffuse illumination …
76Gallium(III) arsenide — Chembox new Name = Gallium arsenide ImageFile = Gallium arsenide.jpg ImageFile1 = Gallium arsenide unit cell 3D balls.png IUPACName = Gallium arsenide Section1 = Chembox Identifiers CASNo = 1303 00 0 SMILES = Ga#As Section2 = Chembox Properties… …
77Keratoconus — Classification and external resources The conical cornea that is characteristic of keratoconus ICD 10 H …
78Achromatopsia — Classification and external resources A person with complete achromatopsia would see only black, white and shades of grey. Additionally, the image would usually be blurry in brighter light (in the brightest light, effectively invisible) but would …
79Optical tweezers — (originally called single beam gradient force trap ) are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch… …
80Lynbrook High School — Infobox high school name= Lynbrook High School, San Jose, CA native name= latin name= motto = Go Vikes! established = 1965 type = Public 4 year endowment = staff = faculty = 83 principal = Bill Richter (Filling in) enrollment = 1,931 students =… …
