These scienctists also found that the greater the pressure created by teh weater in a chamber the higher the temperature at which it boiled. This gives greater energy to teh piston. Teh oldest form of water created energy uses the turbine principle. This says that if you atach a series of baldes or paddles to a wheeel and then direct water with great force the turbine will turn. In the case of water mills the force was created by the rate of the flow of a river.