Vlaské I

Various weirs and rafts have been the most common regulatory water structures on rivers since ancient times. In addition to the regulatory function, they often also had an energy function. Before James Watt came up with his smoking invention, mankind had to rely on the power of arms or legs, cattle, water and wind. The last two were actually effortless, so to speak, if we leave aside the fact that some device had to be made first, which would power...