Рет қаралды 70,913
We've edited a previously posted video to make it a bit more interesting! Why airplanes can fly. Explanation of the Bernoulli’s Principle relating the speed of the wind and the pressure. An example using fans is shown. How this relates to windmills, and why they turn. How power of a windmill relates to the radius of the blade and the speed of the wind. How wind speed varies with height. What is inside the part at the top of a windmill. Difference between low-speed / high torque windmills and the ones which make electricity. How offshore windmills are constructed.