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A capstan is a vertical-axled rotating machine developed for use on sailing ships to apply force to ropes, cables, and hawsers. The principle is similar to that of the windlass, which has a horizontal axle.
During the Greek age, Hippocrates taught trepanning. There is evidence that trepanation was used as a cure for migraines. Trepanning is a type of surgery that involves drilling a small hole into the skull.he tools commonly used in trepanning included a sharp knife, which was used to cut through the skin of the skull and made it possible to pull back the flaps, and a borer similar to a corkscrew. Surgeons also used brushes and files to tidy up the final area around the hole.