achromatic
121Bull's-eye — Condenser Con*dens er, n. 1. One who, or that which, condenses. [1913 Webster] 2. (Physic) (a) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a… …
122Bull's-eye condenser — Condenser Con*dens er, n. 1. One who, or that which, condenses. [1913 Webster] 2. (Physic) (a) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a… …
123Cassegrainian telescope — Telescope Tel e*scope, n. [Gr. ? viewing afar, farseeing; ? far, far off + ? a watcher, akin to ? to view: cf. F. t[ e]lescope. See {Telegraph}, and { scope}.] An optical instrument used in viewing distant objects, as the heavenly bodies. [1913… …
124Cerithium telescopium — Telescope Tel e*scope, n. [Gr. ? viewing afar, farseeing; ? far, far off + ? a watcher, akin to ? to view: cf. F. t[ e]lescope. See {Telegraph}, and { scope}.] An optical instrument used in viewing distant objects, as the heavenly bodies. [1913… …
125Condenser — Con*dens er, n. 1. One who, or that which, condenses. [1913 Webster] 2. (Physic) (a) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a valve to… …
126Dialytic telescope — Telescope Tel e*scope, n. [Gr. ? viewing afar, farseeing; ? far, far off + ? a watcher, akin to ? to view: cf. F. t[ e]lescope. See {Telegraph}, and { scope}.] An optical instrument used in viewing distant objects, as the heavenly bodies. [1913… …
127Equatorial telescope — Telescope Tel e*scope, n. [Gr. ? viewing afar, farseeing; ? far, far off + ? a watcher, akin to ? to view: cf. F. t[ e]lescope. See {Telegraph}, and { scope}.] An optical instrument used in viewing distant objects, as the heavenly bodies. [1913… …
128Galilean telescope — Telescope Tel e*scope, n. [Gr. ? viewing afar, farseeing; ? far, far off + ? a watcher, akin to ? to view: cf. F. t[ e]lescope. See {Telegraph}, and { scope}.] An optical instrument used in viewing distant objects, as the heavenly bodies. [1913… …