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How does electric voltage arise and why is it dangerous? Let's go on an excursion to the Zhigulevskaya hydroelectric power station and the high-voltage laboratory. Let's go down into the crater of the hydroelectric unit! Let's find out how the hydroelectric power station buildings are protected from flooding? And what is the gantry crane for? Let's climb the Arkadyev-Marx generator. What is the difference between artificial lightning and a Tesla coil? What happens if lightning strikes an airplane, and where does an electric eel get its electricity? This video is about this and more. Enjoy watching! #hydroelectric power station #voltage #electricity #howitworks #physics