Cut batts to length by setting the top of the batt into the space and cutting against the bottom plate with a sharp utility knife. Leave an extra 1/2 in. of length for a tighter fit. We're using unfaced batts that are sized to friction-fit into standard stud spaces (either 16-in. or 24-in. on-center studs).
History of Windmills. The Persians seem to have been the first to develop windmills (between 500 and 900 A.D.). Sails had long been used to move ships at sea, but the Persians converted the wind for use in grinding grain.
04 Jan, 2014 who invented 0. A wind turbine is a piece of machinery that converts energy from the wind into electrical power. Wind turbines range widely in size and design, but we are mostly familiar with the large wind turbines in arrays, known as a wind farm.owever, the first practical windmills were not produced until the 7th century. The first electricity producing wind turbine was invented in 1887 by Scottish electrical engineer Professor James Blyth.