contact micrometer
71Video extensometer — A video extensometer is a device that is capable of performing stress/strain measurements of certain materials, by capturing continuous images of the specimen during test, using a frame grabber or a digital video camera attached to a PC. The… …
72Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …
73Spa bath — Note that the term spa bath can also refer to a spa or hot tub. A spa bath basin of water having a temperature of up to 45 degrees Celsius (#expr: 45 *9/5+32 Fahrenheit), containing salts, herbal extracts or herbal oils, in which the hands, feet… …
74Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …
75Wilhelm Tempel — Wilhelm Tempel † Catholic Encyclopedia ► Wilhelm Tempel (ERNEST LEBERECHT) German astronomer, b. 4 December, 1821, at (Nieder ) Cunnersdorf near Löbau, Saxony; d. 16 March, 1889, in Arcetri near Florence. Having lost his mother in …
76Polycrystalline silicon — Polycrystalline silicon, also called polysilicon, is a material consisting of small silicon crystals. It differs from single crystal silicon, used for electronics and solar cells, and from amorphous silicon, used for thin film devices and solar… …
77Dispersed media — A dispersed medium consists of two media that do not mix. More specifically, it contains discrete elements of one medium which are dispersed in a continuous second medium. The two media can be of very different nature. In particular, they can be… …
78Organic field-effect transistor — OFET based flexible display An organic field effect transistor (OFET) is a field effect transistor using an organic semiconductor in its channel. OFETs can be prepared either by vacuum evaporation of small molecules, by solution casting of… …
79Crookes radiometer — The Crookes radiometer, also known as the light mill, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a spindle. The vanes rotate when exposed to light, with faster rotation for more …
80Fossil — For other uses, see Fossil (disambiguation). Three small ammonite fossils, each approximately 1.5 cm across …
