ballistic galvanometer การใช้

• An interesting form of ballistic galvanometer is the Grassot fluxmeter.
• In order to operate correctly, the discharge time through the regular ballistic galvanometer must be shorter than the period of oscillation.
• Its construction is similar to that of a ballistic galvanometer, but its coil is suspended without any restoring forces in the suspension thread or in the current leads.
• In 1924, the German psychiatrist Hans Berger connected a couple of electrodes ( small round discs of metal ) to a patient's scalp and detected a small current by using a ballistic galvanometer.