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在高中物理(甲种本)第二册“气体的导电性”一节,为了验证空气在火焰的作用下能够电离而变成导体,采用的实验是两个带异种电荷的验电器,在它们上端互相靠近的金属球之间置火焰而使空气导电。但如遇空气潮湿,或验电器绝缘性能差,此实验较难做好,而且较麻烦。其实此实验可以直接采用感应圈来做,如附图,只要把接到感应圈两极上的两金属杆的火花
In the High School Physics (Volume One) Volume 2 “Conductivity of Gases” section, in order to verify that air can be ionized and become a conductor under the action of a flame, two experiments with different types of charges are used. A flame is placed between the metal balls whose upper ends are close to each other to make the air conductive. However, if the air is wet or the insulation performance of the electroscope is poor, this experiment is more difficult and more troublesome. In fact, this experiment can be directly used to do the induction coil, as shown in the drawing, as long as the two metal rods connected to the two poles of the induction coil spark