The bigger the rotor blades, the more energy they can capture from the wind. The giant blades (typically 70 m or 230 feet in diameter, which is about 30 times the wingspan of an eagle) multiply the wind's force like a wheel and axle, so even a gentle breeze is enough to make the outer edges of the blades turn around.he same thing happens in a wind turbine, only the dynamo generator is driven by the turbine's rotor blades instead of by a bicycle wheel, and the lamp is a light in someone's home dozens of miles away. Read more in our main article about generators.
The fur trade is a worldwide industry dealing in the acquisition and sale of animal fur. Since the establishment of a world fur market in the early modern period, furs of boreal, polar and cold temperate mammalian animals have been the most valued.
Fur is the hair covering of non-human mammals, particularly those mammals with extensive body hair that is soft and thick. The stiffer bristles on animals such as pigs are not generally referred to as fur. The term pelage â first known use in English c. 1828 â is sometimes used to refer to the body hair of an animal as a complete coat. Fur is also used to refer to animal pelts which have been processed into leather with the hair still attached. The words fur or furry are also used, more ...