DontLookBack.AI on Instagram: "A Van de Graaff generator looks terrifying because the voltage is enormous, but the sparks usually carry very little total energy. That is why it can sting and startle without causing real harm in normal demo conditions. In this clip, unwrapping foil triggers a sudden discharge because the charge builds up and then jumps to the easiest path the moment the foil shifts. The zap tends to travel along the surface of your skin and concentrate at sharp points like finger