reactive mechanical vibrating
11Harmonic oscillator — This article is about the harmonic oscillator in classical mechanics. For its uses in quantum mechanics, see quantum harmonic oscillator. Classical mechanics …
12chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
13Robotics — is the science and technology of robots, and their design, manufacture, and application.cite web |url=http://mw1.merriam webster.com/dictionary/Robotics |title=Definition of robotics Merriam Webster Online Dictionary |accessdate=2007 08 26… …
14Drill string — A drill string on a drilling rig is a column, or string, of drill pipe that transmits drilling fluid (via the mud pumps) and torque (via the kelly drive or top drive) to the drill bit. The term is loosely applied as the assembled collection of… …
15Joseph Louis Lagrange — Lagrange redirects here. For other uses, see Lagrange (disambiguation). Joseph Louis Lagrange Joseph Louis (Giuseppe Lodovico), comte de Lagrange …
16Coriolis effect — For the psychophysical perception effect, see Coriolis effect (perception). Classical mechanics Newton s Second Law …
17Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
18Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …
19Jean le Rond d'Alembert — d Alembert redirects here. For other uses, see d Alembert (disambiguation). Jean Baptiste le Rond d Alembert Jean Baptiste le Rond d Alembert, pastel by Maurice Quentin de La Tour …
20Electrical characteristics of dynamic loudspeakers — A dynamic loudspeaker driver s chief electrical characteristic is its electrical impedance versus frequency. Explanation The most common driver type is an electro mechanical transducer using a voice coil rigidly connected to a diaphragm… …
