Collier's new encyclopedia : a loose-leaf and self-revising reference work ..with 515 illustrations and ninety-six maps . The electricityfrom combs passes to Leyden jars, whereit is stored. The more modern Wimshurst machineresembles the Topler, but consists of twoglass plates, each fitted with tin-foildiscs, and each made to revolve in theopposite direction to the other. ELECTRICAL UNIT. A quantity of electricity that grain of hydrogen from water. nace charge, which also acts as thesecondary of a transformer; current athigh voltage and low amperage is sup-plied to
Collier's new encyclopedia : a loose-leaf and self-revising reference work ..with 515 illustrations and ninety-six maps . The electricityfrom combs passes to Leyden jars, whereit is stored. The more modern Wimshurst machineresembles the Topler, but consists of twoglass plates, each fitted with tin-foildiscs, and each made to revolve in theopposite direction to the other. ELECTRICAL UNIT. A quantity of electricity that grain of hydrogen from water. nace charge, which also acts as thesecondary of a transformer; current athigh voltage and low amperage is sup-plied to the primary, thus inducing highamperage at low voltage in the second-ary. Electric furnaces can only compete,economically, with the ordinary direct-fired furnace where electric power isgenerated cheaply by water-power, a^,for instance, at Niagara. They alsohave the advantage that much highertemperatures can be produced in them,the maximum temperature obtainable innon-electric furnaces being about 2,000°C, whereas, in electric furnaces, a tem-perature of 3,500° C is easily main-tained. There are some processes in. ELECTRIC DYNAMODirect current, lighting and power generator. ELECTRIC BATTERY. See STOR-AGE Battery. ELECTRIC DENSITY, or ELECTRICTHICKNESS, the quantity of electricityfound on a given surface. ELECTRIC FURNACE. Electricfurnaces may be broadly classified into(1) Resistance furnaces, in which heatis produced by the passage of an electriccurrent through a poor conductor, (2)Arc furnaces, in which the heat of theelectric arc is used, (3) Induction fur-naces, which are a modified form of theresistance furnace, and in which theheat is generated by an induced this type of furnace the resistanceelement is frequently formed by the fur- which these extremely high tempera-tures are necessary, as, for instance, inthe manufacture of carborundum. Inthis process, a core of granular carbon,or coke, is placed between electrodes,and around the core is packed a mixtureof co
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1921
