how wind are generate?
403512
Mostly due to the sun heating the Earth and the ocean, causing convection and ocean currents, which effect the atmosphere and cause wind.\n\nThat's the very short answer; read this for the complete one: http://en.wikipedia.org/wiki/Wind
7998
Usually wind harvesters are build in areas with huge winds and occurs throughout the year. You cannot control the wind speed so each collector generates a random amount of energy. For a stable power supply, the energy harvested by each collector is transferred to a storage generator which then collects everything and thus distributes the electrical power in a constant supply to homes. So there is no problem with the erratic wind speed.
599950
Are you looking for something like this, a homemade wind turbine to generate electricity?\n\nhttp://www.otherpower.com/17page1.html
711092
Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface. It occurs at all scales, from local breezes generated by heating of land surfaces and lasting tens of minutes to global winds resulting from solar heating of the Earth. The two major influences on the atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect).\n\nGiven a difference in barometric pressure between two air masses, a wind will arise between the two which tends to flow from the area of high pressure to the area of low pressure until the two air masses are at the same pressure, although these flows will be modified by the Coriolis effect in the extratropics.\n\nWinds can be classified either by their scale, the kinds of forces which cause them (according to the atmospheric equations of motion), or the geographic regions in which they exist. There are global winds, such as the wind belts which exist between the atmospheric circulation cells. There are upper-level winds, such as the jet streams. There are synoptic-scale winds that result from pressure differences in surface air masses in the middle latitudes, and there are winds that come about as a consequence of geographic features such as the sea breeze. Mesoscale winds are those which act on a local scale, such as gust fronts. At the smallest scale are the microscale winds which blow on a scale of only tens to hundreds of metres and are essentially unpredictable, such as dust devils and microbursts.\n\nYou could get more information from the link below...
419160
wind is the result of basically a pressure difference.whenever there is a pressure difference between two places the wind blows from the high pressure side to the low pressure side.this pressure difference can be caused due to several reasond...in summers,the land is overheated and so is the air just around it.the air gets hot and start rising.this tends to lower the pressure of that area.then air from some high pressure area takes the place of that low pressure area.in winters over cooling hightens the pressure of the air.which again tends the air to flow,causing mild winds.near a beach,the heating of the land and the water is uneaven and thus causes the sea breeze during the day and land breeze during the night.
89951
Just as with any other generator, electrical power is proportional to shaft torque and speed.  A wind turbine generator is designed to operate in a certain speed and torque range.  The design of the turbine and pitching of the blade angle keep it operating in this range.  It's actually wind speed that forces the control of torque/speed up to a certain maximum level, so yes, electrical output is directly coupled to wind speed and energy capture of the wind.  \n\nThe generators in wind turbines do generaly require some amount of excitation current to regulate power output.  This is really what allows wind turbines to operate at different power outputs and not a single fixed rating.
822817
the above one of solar cell is gr8\nor you can make a model of a wind mill, attach it to a motor and then, artificially, rotate it to produce current in the motor and connect it to a small bulb to show it lighting
273934
Hot air rises cold air descends.  Do it on a global scale and you get wind.
641866
wind blows from an area of high pressure to an area of low pressure.
152209
wind. the speed of the current traveling through the lines. when they pass each other they make contact.
608810
Wind is the movement of air in response to formation of low pressure cells.\n\nAs someone else stated earlier, the uneven heating of the earth is the primary source for the formation of wind.\n\nCertain parts of the world gets more sunlight than others. This creates uneven heating.\n\nAreas that accumulate more heat are associated w/ low pressure cells. Warm air is less dense than cooler air & will rise.\n\nLike everything else in nature, air pressure tends to want to balance out. That means high pressure will move toward low pressure. This is the beginning of wind.\n\nThe process above describes the global movement of wind that is associated w/ pressure belts around the globe. These are called global winds (ie trade winds, easterlies, etc.)\n\nLocal winds such as valley & mountain breezes as well as sea & land breezes are created in the same way except on a much smaller scale.\n\nLocal winds begin w/ uneven heating of earth's surfaces and/or waters.\n\nFor instance, w/ a sea breeze, localized low pressure will form over land during the day since land heats up faster & to much higher temps than water.\n\nAs the air rises, cooler denser air from over the ocean moves toward the land to replace the air that has risen. This creates a convection current in which the air will circulate, creating a constant breeze.\n\nHowever, at night, the opposite is true. Low pressure forms over the water. Since water cools off more slowly than land surfaces, the water will be the source of the low pressure & the reverse will take place.
321037
Almost all power plants use some heat source (coal, natural gas, nuclear pile, geothermal heat, concentrated sun rays) to generate steam. The steam turns turbines. The turbines turn generators.\nGenerators generate electricity which is where electromagnetism comes in. A simple model is this: when you move a magnet around a wire you see a current induced in the wire. Now a generator moves a whole bunch of coils of wire around magnets (or moves magnets inside lots of coils of wire) and thus uses electromagnetism to generate electricity.
624756
Charlie is right. Wind is named by the direction they are coming from. Easterly winds are coming from the east.\n\nPilot humor just got to love it. Hope you have many many tailwinds. :)
742485
wind is the result of air pressure, air molecules travel from low to high pressure zones, resulting from air warmed by the sun. The strength of the wind i guess would be dictated by the difference in pressure between two zones, and any obstacles it may have to pass over/through in between...
212159
http://www.kansaswindpower.net/used_wind_generators.htm  \n  http://www.nwpwr.com/products/wind/lakota.htm  \n  http://www.mikeswindmillshop.com/wgenerators.html
329787
Wind is the roughly horizontal movement of air (as opposed to an air current) caused by uneven heating of the Earth's surface. It occurs at all scales, from local breezes generated by heating of land surfaces and lasting tens of minutes to global winds resulting from solar heating of the Earth. The two major influences on the atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect).\n\nGiven a difference in barometric pressure between two air masses, a wind will arise between the two which tends to flow from the area of high pressure to the area of low pressure until the two air masses are at the same pressure, although these flows will be modified by the Coriolis effect in the extratropics.\n\nWinds can be classified either by their scale, the kinds of forces which cause them (according to the atmospheric equations of motion), or the geographic regions in which they exist. There are global winds, such as the wind belts which exist between the atmospheric circulation cells. There are upper-level winds, such as the jet streams. There are synoptic-scale winds that result from pressure differences in surface air masses in the middle latitudes, and there are winds that come about as a consequence of geographic features such as the sea breeze. Mesoscale winds are those which act on a local scale, such as gust fronts. At the smallest scale are the microscale winds which blow on a scale of only tens to hundreds of metres and are essentially unpredictable, such as dust devils and microbursts.
383729
It has a dynamo inside it, when you wind it up, that is the driving force for the energy.