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One of the pairs of plates of two metals which compose a voltaic battery; -- called a voltaic couple or galvanic couple.

A form of the voltaic battery having large plates, used for producing rapid and powerful combustion.

To free from polarization, as the negative plate of the voltaic battery.

A substance used to prevent polarization, as upon the negative plate of a voltaic battery.

insulated by a glass handle. It is employed for discharging a Leyden jar or an electrical battery. See Discharger.

. Specifically, in electricity, an instrument for discharging a Leyden jar, or electrical battery, by making a connection between the two surfaces; a discharging rod.

by disruption; breaking through; bursting; as, the disruptive discharge of an electrical battery. Nichol.

ar." Mrs. Browning. Electric atmosphere, or Electric aura. See under Aura. -- Electrical battery. See Battery. -- Electrical brush. See under Brush. -- Electric cable. See Telegraph cable, under Telegraph. -- Electric candle. See under Candle. -- Electric cat (Zoöl.), one of three or more large species of African…

(f) Positive electricity, the electricity that appears at the positive pole or anode of a battery, or that is produced by friction of glass; -- called also vitreous electricity.

ely to some other associated body or bodies, as to tend to the negative pole of a voltaic battery, in electrolysis, while the associated body tends to the positive pole; - - the converse or correlative of electro-negative.

. A picture is drawn on a metallic plate with some material which resists the fluids of a battery; so that, in electro-typing, the parts not covered by the varnish, etc., receive a deposition of metal, and produce the required copy in intaglio. A cast of this is then the plate for printing.

exciting and depolarizing acid solution used in certain cells or batteries, as the Grenet battery. Electropoion is best prepared by mixing one gallon of concentrated sulphuric acid diluted with three gallons of water, with a solution of six pounds of potassium bichromate in two gallons of boiling water. It should be us…

(Mil.), a projectile and powder inclosed together in a case ready for loading. -- Fixed battery (Mil.), a battery which contains heavy guns and mortars intended to remain stationary; -- distinguished from movable battery. -- Fixed bodies, those which can not be volatilized or separated by a common menstruum, without…

island. Macaulay. Floating anchor (Naut.), a drag or sea anchor; drag sail. -- Floating battery (Mil.), a battery erected on rafts or the hulls of ships, chiefly for the defense of a coast or the bombardment of a place. -- Floating bridge. (a) A bridge consisting of rafts or timber, with a floor of plank, supported…

s or for flowing (in various sense of the verb); gliding along smoothly; copious. Flowing battery (Elec.), a battery which is kept constant by the flowing of the exciting liquid through the cell or cells. Knight. -- Flowing furnace, a furnace from which molten metal, can be drawn, as through a tap hole; a foundry cupo…

between corvettes and ships of the line. Frigates, from about 1750 to 1850, had one full battery deck and, often, a spar deck with a lighter battery. They carried sometimes as many as fifty guns. After the application of steam to navigation steam frigates of largely increased size and power were built, and formed the…

An oblong oven or muffle with a battery of retorts; a gallery furnace.

ibiting the phenomena of, galvanism; employing or producing electrical currents. Galvanic battery (Elec.), an apparatus for generating electrical currents by the mutual action of certain liquids and metals; -- now usually called voltaic battery. See Battery. -- Galvanic circuit or circle. (Elec.) See under Circuit. -…

), for crucibles, and as a lubricator, etc. Often called plumbago or black lead. Graphite battery (Elec.), a voltaic battery consisting of zinc and carbon in sulphuric acid, or other exciting liquid.

Lowness of tone; -- opposed to acuteness. Center of gravity See under Center. -- Gravity battery, See Battery, n., 4. -- Specific gravity, the ratio of the weight of a body to the weight of an equal volume of some other body taken as the standard or unit. This standard is usually water for solids and liquids, and air…