Hydroelectric power has been in service for over a century, but its origin, the water wheel, has been around for thousands of years. The ever increasing demand for renewable energies has encouraged engineers to find more ways to extract energy from the environment.
The inflatable-rotor windmill was initially conceived as a combination of the child’s toy pinwheel with an inflated lightweight sphere such as a beach ball. The sphere performs two main functions: as support for the pinwheel's blades or sails, and as a wind augmenter,
The insulated pulse-combustion engine is a reciprocating piston engine concept which explores the five pathways of non-productive energy export from internal combustion engines (thermal conduction, exhaust heat, exhaust pressure, exhaust pollution, and mechanical losses) in an effort to improve fuel economy.
A laboratory chemical stays most of its lifetime on a shelf, in a closed container, which is opened when it is necessary to take out part of its contents. Generally, partial removal is carried out by pouring, if the chemical is a liquid or a powder,
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