1. an instrument for detecting the presence and direction of electric current
Usage: scientific; historical

Examples

• The scientist used a galvanoscope to detect the weak electric current in the circuit.
• Early galvanoscopes were essential tools in electrical experiments.
• The galvanoscope’s needle deflected when current flowed through the wire.
• Before modern ammeters, researchers relied on galvanoscopes to study electricity.
• The physics teacher demonstrated how a galvanoscope responds to electrical current.
• Luigi Galvani’s work with electricity led to the development of the galvanoscope.