Its final feature, inaugurated in late 2016, is a new ship lift, a hydraulic seesaw that raises and lowers vessels as many as 371 feet to traverse the dam. Archimedes’ notion was simple ...

The problem was that the lever arm was too short ... of their working principle come from followers of Aristotle and from Archimedes, both dated around 300 BC. Archimedes gave this static ...

When the Romans invaded Syracuse in 214 B.C., Archimedes invented "engines of war" to defend the city, including cranes to drop rocks, claws to lift ships from the water, and machines to fire ...