With lightning, which blinded with bright light and stunned with thunder, split age-old oaks, caused fires and killed, the people of the Middle Ages looked with fear as a cruel and strong dragon. Who managed to tame this terrible electric dragon, make him obediently run on wires, shine peacefully in light bulbs and diligently turn electric motors? This was done by scientists and engineers who managed to catch and study lightning. This book is about them - bold and clever lightning tamers. This book of scientific stories is special, it is not about answers, but about questions.