electroscope

3 definitions found

electroscope - Collaborative International Dictionary of English v.0.48 :

  Electroscope \E*lec"tro*scope\, n. [Electro- + -scope: cf. F.
     ['e]lectroscope.] (Physics)
     An instrument for detecting the presence of electricity, or
     changes in the electric state of bodies, or the species of
     electricity present, as by means of pith balls, and the like.
     [1913 Webster]
  
     Condensing electroscope (Physics), a form of electroscope
        in which an increase of sensibility is obtained by the use
        of a condenser.
        [1913 Webster]

  Cinematograph \Cin`e*mat"o*graph\, n. [Gr. ?, ?, motion +
     -graph.]
     1. an older name for a movie projector, a machine,
        combining magic lantern and kinetoscope features, for
        projecting on a screen a series of pictures, moved rapidly
        (25 to 50 frames per second) and intermittently before an
        objective lens, and producing by persistence of vision the
        illusion of continuous motion; a moving-picture projector;
        also, any of several other machines or devices producing
        moving pictorial effects. Other older names for the movie  projector
         are animatograph, biograph, bioscope,
        electrograph, electroscope, kinematograph,
        kinetoscope, veriscope, vitagraph, vitascope,
        zoogyroscope, zoopraxiscope, etc.
  
              The cinematograph, invented by Edison in 1894, is
              the result of the introduction of the flexible film
              into photography in place of glass.   --Encyc. Brit.
        [Webster 1913 Suppl.]
  
     2. A camera for taking chronophotographs for exhibition by
        the instrument described above.
        [Webster 1913 Suppl.]

electroscope - WordNet (r) 2.1 (2005) :

  electroscope
      n 1: measuring instrument that detects electric charge; two gold
           leaves diverge owing to repulsion of charges with like sign