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Shear stress
In physics, shear stress is a stress state in which the shape of a material tends to change (usually by "sliding" forces -- torque by transversely-acting forces) without particular volume ... > more -
Energy and the Environment
Renewable Energy
Environmental Science
Fuel Cells
Sustainability
Alternative Fuels
Liquid nitrogen economy
A liquid nitrogen economy is a hypothetical proposal for a future economy in which the primary form of energy storage and transport is liquid nitrogen. It is proposed as an alternative to liquid ... > more -
Chemical bond
A chemical bond is the physical phenomenon of chemical substances being held together by attraction of atoms to each other through sharing, as well as exchanging, of electrons -or electrostatic ... > more -
Schrodinger's cat
Schrödinger's cat is a seemingly paradoxical thought experiment devised by Erwin Schrödinger that attempts to illustrate the incompleteness of an early interpretation of quantum mechanics ... > more -
Teleportation
Teleportation, or teletransportation, is the alleged process of moving objects from one place to another more or less instantaneously, without using conventional transportation. With present ... > more -
Jet engine
A jet engine is any engine that accelerates and discharges a fast moving jet of fluid to generate thrust in accordance with Newton's third law of ... > more -
Wind Energy
Energy and the Environment
Renewable Energy
Electricity
Environmental Science
Energy Technology
Wind turbine
A wind turbine is a machine for converting the mechanical energy in wind into electrical energy. If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine ... > more
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