double pole circuit method
51Pendulum — This article is about pendulums. For other uses, see Pendulum (disambiguation). Simple gravity pendulum model assumes no friction or air resistance …
52Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… …
53Enigma machine — Military Enigma machine …
54railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
55Show jumping — Show jumping, also known as stadium jumping or jumpers, is a member of a family of English riding equestrian events that also includes dressage, eventing, hunters and equitation. Jumping classes are commonly seen at horse shows throughout the… …
56Thiele/Small — commonly refers to a set of electromechanical parameters that define the specified low frequency performance of a loudspeaker driver. These parameters are published in specification sheets by driver manufacturers so that designers have a guide in …
57Émetteur à étincelles — Un émetteur à étincelles désigné aussi comme émetteur à ondes amorties est un dispositif destiné à produire des ondes électromagnétiques amorties de classe B composées de séries successives d oscillations dont l amplitude, après avoir atteint un… …
58List of Future GPX Cyber Formula characters — The following is a list of characters from the anime Future GPX Cyber Formula series, including all the characters in the TV series, the OVAs, and the games. Contents 1 Character conception 2 Main characters 2.1 Hayato Kazami …
59Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] …
60Alternating current — (green curve). The horizontal axis measures time; the vertical, current or voltage. In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge …
