conductor's valve
31negative lead — Lead Lead, n. 1. The act of leading or conducting; guidance; direction; as, to take the lead; to be under the lead of another. [1913 Webster] At the time I speak of, and having a momentary lead, . . . I am sure I did my country important service …
32Spark plug — A spark plug (also, very rarely nowadays, in British English: a sparking plug) is an electrical device that fits into the cylinder head of some internal combustion engines and ignites compressed aerosol gasoline by means of an electric spark.… …
33Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
34Válvula de asiento — Una válvula de asiento y sus componentes (en este caso, de un motor de explosión). La válvula de asiento (también llamada de globo o de coliza ) es una válvula que consiste en un agujero, generalmente redondo u oval, y un tapón cónico, por lo… …
35LED anchor light — A LED anchor light is a newer type of an already existing marine signaling light known as an anchor light , defined by international regulations as a 360 degree white all round light with a given range of one NM (Nautical Mile), two NM, or three… …
36List of inventors — This is a list of inventors. See also: List of scientists, Timeline of invention, List of inventions named after people, List of inventors killed by their own inventions, and . Alphabetical list compactTOC NOTOC A * Vitaly Mikhaylovich Abalakov,… …
37technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
38March 28 — << March 2011 >> Su Mo Tu We Th Fr Sa 1 2 3 …
39War of Currents — In the War of Currents era (sometimes, War of the Currents or Battle of Currents ) in the late 1880s, George Westinghouse and Thomas Edison became adversaries due to Edison s promotion of direct current (DC) for electric power distribution over… …
40Mains hum — Spectrum of mains hum at 60 Hz Mains hum, electric hum, or power line hum is an audible oscillation of alternating current at the frequency of the mains electricity, which is usually 50 Hz or 60 Hz, depending on the local power… …
