Dewatering Mines

It was Frank's second year in college, and currently he sat in his lecture hall. At the moment, his focus was entirely on his professor, who was speaking of a topic even he found dull. Still, he was hard at work, jotting down the information into his notes.

Frank rarely, if ever, looked at his notes after having written them. Rather, he explicitly made use of the notes as a memorization tool. Simply by taking notes, he was able to more thoroughly remember the content that was being taught. His professor was speaking words and pointing towards a diagram on the whiteboard while he jotted the information down.

"In the fifteenth century, the Germans came up with a way to pump water out of mines by using mechanized wooden pumps and animal power. Water was removed by buckets using rope conveyor belts powered by horses on treadmills. As you can see in this diagram, this was how such a device functioned."