oscillograph


From The Collaborative International Dictionary of English v.0.48:

oscillograph \oscillograph\ n.
   1. a device for making a record of the wave forms of
      fluctuating .
      [WordNet 1.5]
.

From The Collaborative International Dictionary of English v.0.48:

Oscillograph \Os"cil*lo*graph\, n. [L. oscillare to swing +
   -graph.] (Elec.)
   An apparatus for recording or indicating alternating-current
   wave forms or other electrical oscillations, especially of
   voltages or currents; it usually consists of a galvanometer
   with strong field, in which the mass of the moving part is
   very small and frequency of vibration very high. --
   Os`cil*lo*graph"ic, a.
   [Webster 1913 Suppl.]
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