自行设计并自制弧光灯和电灯

摘要

利用铅笔、学生电源、变压器和多股铜丝的电源线，制作了弧光灯、电火花纷飞演示器和电灯，实验安全可靠、现象明显，激发了学生的学习兴趣。%Using simple pencil leads ,student power supply ,transformer and copper power wires , the flame arc lamp ,flying‐spark demonstration device and electric lamp were made .The devices were intuitive ,safe and reliable ,and motivated the students’ learning interests .