movable contact
91Enigma machine — Military Enigma machine …
92Mechanical advantage — is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output… …
93Manchester Aquatics Centre — Coordinates: 53°28′10″N 2°14′08″W / 53.46944°N 2.23556°W / 53.46944; 2.23556 …
94Early modern period — Not to be confused with Early modern Europe. Waldseemüller map with joint sheets, 1507 Human history This box …
95Hydraulic analogy — The electronic–hydraulic analogy (derisively referred to as the drain pipe theory by Oliver Heaviside) is the most widely used analogy for electron fluid in a metal conductor. Since electric current is invisible and the processes at play in… …
96Montech water slope — The Montech water slope The Montech water slope is a type of canal inclined plane built on the Canal de Garonne, in the commune of Montech, Tarn et Garonne, South West France. It is managed by the publicly owned Voies na …
97List of Indian inventions — [ thumb|200px|right|A hand propelled wheel cart, Indus Valley Civilization (3000–1500 BCE). Housed at the National Museum, New Delhi.] [ 200px|thumb|Explanation of the sine rule in Yuktibhasa .] List of Indian inventions details significant… …
98M39 Pantserwagen — Type Armoured car Place of origin  Netherlands …
99Oscilloscope — This article is about current oscilloscopes, providing general information. For history of oscilloscopes, see Oscilloscope history. For detailed information about various types of oscilloscopes, see Oscilloscope types. Illustration showing the… …
100printmaking — /print may king/, n. the art or technique of making prints, esp. as practiced in engraving, etching, drypoint, woodcut or serigraphy. [1925 30; PRINT + MAKING] * * * Art form consisting of the production of images, usually on paper but… …
