A study suggests that the first of seven key pyramids in Egypt, the Step Pyramid of Djoser, was built using a hydraulic lift. Dated to about 4,500 years ago, this would move up the introduction of ...

Meanwhile, check out the load test in the video below as the muscles lift and lower 5 kg (11 lbs) each. A search of Hackaday shows hydraulic artificial muscles may be rare, so perhaps this will be ...