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) 3.0 (2006) [wn]:
electroscope
n 1: measuring instrument that detects electric charge; two gold
leaves diverge owing to repulsion of charges with like sign
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