Definitions
from The Century Dictionary.
- noun A telegraph in which the indications are given by the deflections of a magnetic needle whose normal position is parallel to a wire through which a current of electricity is passed at will by the operator.
Etymologies
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Examples
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A tangent galvanometer, or a needle-telegraph instrument, for example, may be connected with Y and Z. 227.
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Current reversers are used in connection with the needle-telegraph and many other instruments.
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