Electroscope

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.]

From WordNet (r) 2.0 [wn]:

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