Ancient and Medieval Era
Early uses of water power date back to Mesopotamia and ancient Egypt, where irrigation has been used since the 6th millennium BC and water clocks had been used since the early 2nd millennium BC. Other early examples of water power include the Qanat system in ancient Persia and the Turpan water system in ancient China.
Read more about this topic: Hydro Dynamics
Famous quotes containing the words ancient and, ancient, medieval and/or era:
“Let him not quit his belief that a popgun is a popgun, though the ancient and honorable of the earth affirm it to be the crack of doom.”
—Ralph Waldo Emerson (1803–1882)
“When man has neither the strength to subdue his underworld powers—which are really the ancient powers of his old, superseded self; nor the wit to placate them with sacrifice and the burnt holocaust; then they come back at him, and destroy him again. Hence every new conquest of life means a “harrowing of Hell.””
—D.H. (David Herbert)
“Nothing in medieval dress distinguished the child from the adult. In the seventeenth century, however, the child, or at least the child of quality, whether noble or middle-class, ceased to be dressed like the grown-up. This is the essential point: henceforth he had an outfit reserved for his age group, which set him apart from the adults. These can be seen from the first glance at any of the numerous child portraits painted at the beginning of the seventeenth century.”
—Philippe Ariés (20th century)
“The great pagan world of which Egypt and Greece were the last living terms ... once had a vast and perhaps perfect science of its own, a science in terms of life. In our era this science crumbled into magic and charlatanry. But even wisdom crumbles.”
—D.H. (David Herbert)