Example image of eyePlorer eyePlorer map for 'Galvanometer': Ammeter Electric current Analogue electronics Coil Electromechanics Transducer Servomechanism Hans Christian Ørsted Johann Salomo Christoph Schweigger André-Marie Ampère Luigi Galvani William Thomson, 1st Baron Kelvin Georg Ohm Ohm's law Edward Weston (chemist) Meter (electronics) Ampere Shunt (electrical) Resistor Electrical resistance Parallax Mirror galvanometer Oscillograph Measuring instrument Compass Magnetic field Tangent Claude Pouillet Euclidean vector Parallelogram of force Earth's magnetic field Potentiometer Time-domain reflectometer Analog-to-digital converter Hard disk drive Electrocardiography Electroencephalography Polygraph Max Planck Institute for the History of Science Virtual Laboratory Jacques-Arsène d'Arsonval Laser projectors Paul Panhuysen Potentiometer (measuring instrument) Richard Caton Murray loop bridge Solenoid voltmeter William Duddell Leopoldo Nobili Ionization chamber