Wind turbine - Wikipedia
A wind turbine is a device that converts the wind's kinetic energy into electrical energy.. Wind turbines are manufactured in a wide range of sizes, with either horizontal or vertical axes. It is estimated that hundreds of thousands of large turbines, in installations known as wind farms, now generate over 650 gigawatts of power, with 60 GW added each year.
Windmill - Wikipedia
A windmill is a structure that converts wind power into rotational energy by means of vanes called sails or blades, specifically to mill grain (), but the term is also extended to windpumps, wind turbines and other applications. The term wind engine is sometimes used to describe such devices.. Windmills were used throughout the high medieval and early modern periods; the horizontal or panemone ...
Windmill | Encyclopedia.com
Windmill Facts - Information about Wind Power and Windmills. Windmills are very important technical inventions that became very popular in Middle Ages when they enabled our ancestors to harness the power of the wind and use that power to power various types of machines. Facts about windmills cover many interesting topics that range about ...
Wind Power Information and Facts - Environment
Wind power offers a sustainable option in the pursuit of renewable energy. Wind is the movement of air from an area of high pressure to an area of low pressure. In fact, wind exists because the ...
Wind power - Simple English Wikipedia, the free encyclopedia
Wind power is the conversion of the energy in wind into a more useful form of energy, like electricity. It is a renewable source of energy that helps to cut down on the pollution of earth's air. Wind power capacity has expanded quickly to 336 GW in June 2014, and wind energy production was about 4% of total worldwide electricity usage, and growing fast.
windmill - Kids | Britannica Kids | Homework Help
A windmill is a machine that harnesses the power of the wind . Windmills may be used to grind grain into flour, to pump water, or to produce electricity.
farm machinery - Students | Britannica Kids | Homework Help
Wind. Windmills were among the first devices to replace animal power on the farm. Though many windmill designs exist, two are common. A windmill may consist of a low tower with, on one side, a vertical contrivance that has four arms arranged in the shape of an X. Each arm has a wide sail that resists the wind.
windmill | Definition, History, Types, & Facts | Britannica
Windmill, device for tapping the energy of the wind by means of sails mounted on a rotating shaft. The sails are mounted at an angle or are given a slight twist so that the force of wind against them is divided into two components, one of which, in the plane of the sails, imparts rotation.
Timeline: The history of wind power | Wind power | The ...
1941 – Vermont, US. The world's first megawatt wind turbine is built and connected to the power grid in Castleton, Vermont. The turbine has 75-foot blades and weighs 240 tons. 1956 – Gedser ...
wind turbine | technology - Encyclopedia Britannica
wind turbine, apparatus used to convert the kinetic energy of wind into electricity.. Wind turbines come in several sizes, with small-scale models used for providing electricity to rural homes or cabins and community-scale models used for providing electricity to a small number of homes within a community.At industrial scales, many large turbines are collected into wind farms located in rural ...
Windmill | Encyclopedia.com
A windmill is a structure or machine that converts wind into usable energy through the rotation of a wheel made up of adjustable blades. Traditionally, the energy generated by a windmill has been used to grind grain into flour. Windmills are designed by skilled craftsmen and can be constructed on site using hand tools.
Wind Energy | National Geographic Society
wind energy. Noun. kinetic energy produced by the movement of air, able to be converted to mechanical power. wind farm. Noun. area with a large group of wind turbines, used to generate electric power. wind power. Noun. rate of producing, transferring, or using wind energy, usually measured in watts.
Wind | Encyclopedia.com
wind 1 • n. / wind / 1. the perceptible natural movement of the air, esp. in the form of a current of air blowing from a particular direction: the wind howled about the building an easterly wind| gusts of wind. ∎ [as adj.] relating to or denoting energy obtained from harnessing the wind with windmills or wind turbines. ∎ used to suggest something very fast, unrestrained, or changeable ...
