volti

i. [Italian, imper. volt are to turn.] [VOLT (1).] Music: A direction to turn over the leaf; as, Volti subito turn over the leaf quickly. võl-ti-geur (gas zh), s. (Fr., from vol tiger = to vault (q. v.).] *1. A leaper, a vaulter, a tumbler. 2. A foot-soldier in a select company of every regiment of French infantry. They were established by Napoleon during his consulate. Their duties, exercises and equipments are similar to those of the English light companies. võlt-me-tër, s . [Eng. volt (2), and meter .] Elect.: Any instrument for measuring the pre ure, electromotive force, or difference of potentials electroscope is a kind of voltmeter, but will only measure large differences of potential. If the terminals are connected with flat plates arranged parallel to each other, one of which is movable, the attractive force between the plates at a given small distance will be a voltmeter. This method is too coarse for ordinary currents, but a modifica tion of it is employed in Thomson's quadrant electrometer. In Cardew's voltmeter the heating effect of the current in a wire, which varies with the electromotive force, and is measured by the expansion produced, is employed. In the majority of instruments the electro-magnetic action is employed in some form of galvanometer. These are more usually wound to act as ammeters, but if wound with very thin wire the high resistance allows the electromotive force required to drive a certain cur rent through them to be calibrated and denoted in volts. Such instruments are adjusted or calibrated by comparison with a "standard" voltaic cell or voltameter. võlt-zi-ą, s . [Named after Voltz, of Strasburg.] Palæobotany : A genus of Conifere, consisting of lofty trees with pinnated branches, having on all se ile leaves, in form and imbrication like those of Araucaria. It has also affinities to the Cypre . Found in the Permian and the Trias of Britain and Germany. võltz-îne, võltz'-īte, subst. [After the French mining engineer Voltz; suff. -ine, -ite ( Min.).] Min .: A mineral occurring in mammillary groups of globules, having a concentric lamellar structure, optically uniaxial. Hardne , 4-4-5; specific gravity 3.66-3-81; luster, greasy, sometimes pearly on a cleavage surface; color, yellowish, brownish. Composition: An oxysulphide of zinc, with the formula 4ZnS+ZnO, which represents: Sulphide of zinc, 82-73; protoxide of zinc, 17-27=100.