손 전기 발전기
Gelsonlab HSTM-042 어린이 교육용 전기 발전기 DIY 과학 키트
손 전기 발전기 is an experimental device for generating current by turning the handle and accelerating the gear set to drive the coil to cut the magnetic line of force. Through experiments, we can understand the principle of converting mechanical energy into electrical energy and the relationship between electromagnetism.