Windmills are one type of invention. Windmills were brought to Europe in the 12th century by the crusaders. The sails (the things that turned in the wind) were mounted on a horizontal axis. Since it was mounted on a horizontal axis, it used the wind better than a vertical axis.
Upright mills can only turn if turning 90 degrees. The windmills were owned by the "miling smoke" division of the Manor's charter. Later, windmills were …show more content…
by Ge Hong, who said it was a concoction of sulfur, charcoal, and potassium nitrate. Gunpowder was first used for fireworks, then for rockets, which were used as weapons in war. After that, they were used for heavy artillery, which is a large barrel, with a stone or metal ball inside, and when the fire was struck against the string attached to the top, it would burn up, and then fire the round missile at whatever the target was. Yet another medieval invention was the Ballista, which was a HUGE crossbow that would shoot a giant grappling hook at a castle wall. It was mainly used in sieges, which is when you try to wait someone out when they are inside of some kind of space, like a castle. Or, they would try to break in by getting inside the space and fighting whoever was inside. Ballista would grapple at the top of the walls, and people would climb up the ropes to the top of the walls.
These are many of the great inventions that came about in medieval times. The printing press, the magnetic compass, windmills, and gunpowder all affected our modern inventions and way of life. They are all great for lots of the other things. This is my paper on medieval