<human>:  How are Archimedes’ principles of buoyancy applicable to today’s engineering?
<bot>: Archimedes' principles of buoyancy can be applied to modern engineering in a variety of ways. For example, they can be used to design ships and submarines that can float on water, design aircraft and helicopters so they can stay aloft, and create water pumps, tanks and reservoirs for water storage and distribution. Furthermore, buoyancy principles can be used to measure the displacement of liquids, calculate the weight of a body of water and help mitigate risk of floods and tsunamis.