Since16th century, thousands of Dutch people have lived on ancient lake beds. Therefore, many windmills are used to pump water and keep the bottom of the lake dry. In these low-lying areas, windmills are still an important factor in water resources management. It is reported that the largest windmill can lift 65,438+100,000 gallons of water to a height of 4 feet per minute under normal wind. In the17th century, the invention of camshaft and machine shaft enabled wind power to be applied to various industrial uses. Thousands of windmills have been used in wood, paper and printing and dyeing industries, creating the world's first industrial zone.

The first typhoon car was made in the Netherlands, and the exact age has not been verified, but before 1274, there were waterwheels driven by rivers and streams everywhere. 14 14 years, invented the earliest known windmill for drainage. Around 1450, windmills were everywhere in southern Holland. These windmills did not originate in the Netherlands, but may have been introduced to Europe from the Middle East during the Crusade.

However, the development of windmills is obviously due to the Netherlands, because the diversity of windmills in the Netherlands is unparalleled. Nevertheless, the emergence of technology soon ended the use of windmills. First, the steam engine, then the internal combustion engine, and finally the electric motor gradually replaced the work done by wind or water. Windmills are useless, so they are dismantled or used as storage places. By 1923, only 3,000 windmills out of 1000 survived, and this number has continuously dropped to more than 1000 today. Fortunately, these monuments are now preserved, and many of them are open to the public regularly.

United States Declaration of Independence

1776 The American Declaration of Independence was written on parchment made in Zaan, the Netherlands. According to textual research, this parchment was made in 1692 at the De Schoolmeester windmill in Zaanse Schans.