The film discusses the evolution of navigation and the principles of buoyancy, stability, and propulsion in watercraft. It explains how objects float based on the displacement of water and the balance ...

Boats are such a part of our lives that we may not think twice about all the things that make them tick. We're more than happy to enjoy a ride over the water, but that's one of the more puzzling facts ...

Coalbed methane as one type of clean energy has become an important gas resource recently. High-pressure water injection in coal seams is an effective approach for improving gas extraction efficiency, ...