MVT Blowing in the Wind (Stewartby)
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RULES: Physical caches can be logged online as "Found" once the physical log has been signed. Muggles nearby so did not sign is not an excuse, neither is no pen! LOGS WILL BE DELETED. Please note that bicycles are not permitted on the mounds. There are signs and also wooden fencing bike racks at the bottom. Use stealth as Muggle central so please be careful
Wind is the movement of air from an area of high pressure to an area of low pressure. In fact, wind exists because the sun unevenly heats the surface of the Earth. As hot air rises, cooler air moves in to fill the void. As long as the sun shines, the wind will blow. And as long as the wind blows, people will harness it to power their lives.
Ancient mariners used sails to capture the wind and explore the world. Farmers once used windmills to grind their grains and pump water. Today, more and more people are using wind turbines to wring electricity from the breeze. Over the past decade, wind turbine use has increased at more than 25 percent a year. Still, it only provides a small fraction of the world's energy.
Most wind energy comes from turbines that can be as tall as a 20-story building and have three 200-foot-long (60-meter-long) blades. These contraptions look like giant airplane propellers on a stick. The wind spins the blades, which turn a shaft connected to a generator that produces electricity. Other turbines work the same way, but the turbine is on a vertical axis and the blades look like a giant egg beater. A single wind turbine can power 500 homes
The wind turbine has a hub height of approximately 85m (roughly the height of the Stewartby chimneys) and a maximum blade to tip height of 120.5m. It is estimated to produce around 4,500,000 KWh of electricity per year. And for this particular turbine it can generate enough energy for nearby centre, and up to 1200 houses.
The view from the this area of callow mounds, overlooks other local landmarks. Stewartby Lake was excavated for clay to fuel the brick making industry that dominated the Marston Vale for over 80 years when brick kilns and chimneys could be seen from Brogborough to Kempston. The remaining chimneys have been listed in recognition of the impact that brickmaking and successive industries had on the Marston Vale landscape.