. "ballistic galvanometer"^^ . "ballistic galvanometer"@en-us . "102243021"@en-us . "0"^^ . "0"^^ . . "02781213-n"^^ . . . . . . "102684435"@en-us . . "102781213"^^ . "a moving-coil galvanometer that measures electric charge"@en-us .