condenser

[Eng. condens (e); -er.] I. Ord. Lang.: One who or that which condenses. II. Technically: 1. Steam - engine : An apparatus for reducing to a liquid form the steam in front of the piston, so as to obtain a partial vacuum at that point, and thus utilize the natural pre ure of the atmosphere. Watt invented the injection condenser and the separate condenser. The surface condenser has a series of flat chambers or tubes, usually the latter, in which the steam is cooled by a body of water surrounding the tubes. Distilled water for ships' use is obtained by the condensation of steam in a surface condenser. ( Knight.) 2. Distilling : The still-condenser is an apparatus generally made of the worm-tub form; the coil containing the alcoholic vapor traversing a tub which receives a constant acce ion of cold water, condensing the vapor in the coil. The liquid escapes at a cock below. ( Knight .) 3. Metal.: An apartment in which metallic or deleterious gaseous fumes are condensed to prevent their escapo into, and contamination of, the atmosphere. The device consists of a prolonged duct for the fumes, with showers of water to condense the arsenical, sulphurous, and other fugitive volatile matters. It also serves an economical purpose in saving fugitive fumes of lead, zinc, mercury ul phur, antimony, . ( Knight .) 4. Gas - making : An apparatus in which the crude gas from the retort is cooled, and the ammoniacal liquor and tar extracted from it. ( Knight . ) 5. Sugar manufacture : The Degrand (Derosne) condenser consists of a vertical series of convoluted steam-pipes, over which trickles the sugar-cane juice from the defecator. ( Knight .) 6. Wool manufacture : A device for compacting the narrow slivers from a carding-machine so as to bring them into the condition of slubs. (Knight.) teeth. ( Knight.) 7. Dentistry : A tool for packing foil for plugging 8. Pneumat .: An air-pump for filling a chamber with air or gas at a pre ure above the atmospheric. ( Knight .) 9. Optics : A lens to gather and concentrate the rays collected by the mirror and direct them upon the object. ( Knight .) "If now the focus be carefully adjusted and the achro condescendency condensing force, s. Elect.: The relation in frictional electricity be tween the whole charge which the collecting plate can take while under the influence of the second plate to that which it would take if alone; the relation of the total quantity of electricity on the collecting plate to that which remains free. ( Ganot . )