Fleming Force Experiment Apparatus 電磁力兩用實驗器
此儀器可顯示兩種Fleming theory 之力的實驗，如圖所示，只要兩支把金屬改
變位置便可做到Electricity supply : DC 4~6V, supplied with rectangular
swinger coil, U magnet . swinger can swing while electrical current pass through the coil
Item No : JP 118-430