Windmill

Windmill

800

The windmill was invented in eastern Persia during the ninth century. According to surviving documents, these early windmills had between six and 12 sails made up from reed and cloth matting and were used to either grind grain or draw up water — the latter typically as part of an irrigation system. The now-traditional horizontal-axle windmill (pictured) — such as those found in Holland — was invented much later, appearing in Europe during the 18th century. Today, windmills have declined in use, though their principles still apply to newer inventions such as wind turbines.