Wind power is the use of our natural wind which converts it into mechanical energy which eventually becomes electricity. You may not realize it, but we used wind power centuries ago. It pumped water, ground grain and many other things. (Resources, awea.org) Throughout history, people have had the ability to use wind as a source of energy. Wind power was used to propel boats along rivers as early as 5,000 BC. By 200 BC, China used windmills to pump water, while in Persia and the Middle East, vertical-axis windmills with woven reed sails milled grain. (history-wind energy, energy.gov) Eventually, the discoveries about wind energy became vast. Plenty of ideas developed. In the 11th century, Middle Easterners used windmills to produce food. Which then allowed nomads, merchants and crusaders to bring the idea further to Europe. The Dutch further improved the windmill by making it to drain lakes and river marshes. Colonists brought this advanced technology to the New World and began using windmills to pump water for farms, ranches and more. Then eventually, produce electricity, for homes and industries and soon, wind turbines. To calculate such wind turbines, it depends on three main variables: the size of the wind turbine, the wind speed and the efficiency of the turbine as well as the generator. The formula for calculating wind power is: P=½ρAV³.P = power in watts. ρ = The density of the air (1.2 kg/m³ at sea level and 20° C)A = The swept surface of the turbine blades (m² square meters)V = wind speed (meters per second) (Wind Turbine Kits and Supplies, Wind Turbine Kits. com)Let's test this equation. Let's say we have a nice n...... middle of paper ......rgy. Texas is ranked first in the state for the most MW (megawatts) installed, with more than 7,772 turbines alone. Did you know that China has the largest wind market of any country? It was ranked 1 out of all countries. China had around 67.7 gigawatts of wind capacity thanks to its enormous installations. The United States was behind China, ranking second in its total wind power capacity of 60 gigawatts. Did you also know that wind energy is actually solar energy? Crazy, right? The sun is also responsible for what we call “wind energy.” (10 Incredible Facts About Wind Power, science.howstuffworks.com) Do you expect these giant turbines to make any noise? Well, it's totally the opposite. It's actually surprisingly quiet. Noise impacts are regulated by municipalities as well as the Massachusetts Department of Environmental Protection (MassDEP). (Wind Energy: Facts, mass.gov)