frog galvanoscope was a sensitive electrical instrument used to detect voltage in the late 18th and 19th centuries. It consists of a skinned frog's leg...

1791 discovered the principle of the frog galvanoscope – that electric current would make the legs of a dead frog jerk. Galvanometers have been essential...

frog's leg galvanoscope. A good supply of live frogs was kept to hand by the researcher ready to have their legs prepared for the galvanoscope. Frogs...

in an experiment with a living frog. A supply of frogs was usually on hand, as they were used in the frog galvanoscope. The electromagnetic galvanometer...