1 | It was an electroscope which contained a small amount of radium. | |
2 | When the fur is removed from the vicinity of the electroscope , the leaves return to the original angle. | |
3 | As there was already pre-charge applied to the electroscope , an additional little charge caused reaction. | |
4 | Step 3: If the aluminum foil ball is repelled away from the dish, the electroscope works. | |
5 | The effect of the electrified triboelectrification rod with electricity is still obvious after 300 seconds to be tested by the electroscope. |