
The SciencesMarch 12, 1898
An Electric Curve Tracer
For Delineating the Forms and Phases of Periodic Electric Quantities, Viz., Electric Currents, Electromotive Forces, Electric Power and Magnetic Induction, also for Tracing Hysteresis Curves. '

An Electric Curve Tracer
For Delineating the Forms and Phases of Periodic Electric Quantities, Viz., Electric Currents, Electromotive Forces, Electric Power and Magnetic Induction, also for Tracing Hysteresis Curves. '