alternating current bridge
41technology, 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… …
42Smart grid — Public infrastructure …
43George Westinghouse — Infobox Scientist name = George Westinghouse caption = birth date = birth date|1846|10|6 birth place = Central Bridge, New York death date = death date and age|1914|03|12|1846|10|06 death place = New York, New York residence = citizenship =… …
44railroad — /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… …
45Lauffen — Infobox German Location name = Lauffen name local = Art = Stadt image photo =Lauffen am neckar 2005.jpg imagesize = image caption= Neckar bridge at Lauffen image coa = Wappen Lauffen am Neckar.svg Wappengröße = lat deg = 49 | lat min = 05 | lat… …
46Multimeter — A digital multimeter A multimeter or a multitester, also known as a VOM (Volt Ohm meter), is an electronic measuring instrument that combines several measurement functions in one unit. A typical multimeter may include features such as the ability …
47History of the New York City Subway — Charles Harvey demonstrating his elevated railroad design on Greenwich Street in 1867 Main article: New York City Subway The New York City Subway has a long history, beginning as many disjointed systems and eventually merging under City control.… …
48Pickup (music technology) — For phonograph pickup, see Magnetic cartridge. For other uses, see Pickup disambiguation page. Three magnetic pickups on a Peavey Raptor with the pickup configuration of a fat strat (H S S). The bridge (right) pickup is a humbucker and the neck… …
49Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …
50Humbucker — A conventional humbucker (or Humbucking pickup) is a type of electric guitar pickup that uses two coils, both generating string signal. Humbuckers have high output since both coils are in series and because the magnetic circuit is low loss. Like… …
