This was about Stephen Gray who made insulators and conductors. Stephen Gray is a big par of electricity nowadays although I didn’t even know who he was before the video!
In the great chamber of the charter house, Stephen Gray made magic. Well, he made insulators and conductors. He built a wooden frame, with two swings hanging off the frame with silk rope. Then he put a tray or plate of gold leaves in front of the swings. He then got one of the boys who lived in charter house to lay across the swings. when the electricity was generated, the boy put his hands on top of the tray and the leaves flew up!
What makes some things insulators or conductors? Would it hurt the boy with the electricity going through him like an electric shock?