Related topics: energy · power

New device powers wearable sensors through human motion

The advent of inexpensive wearable sensors that can monitor heart rate and body temperature, as well as levels of blood sugar and metabolic byproducts, has allowed researchers and health professionals to monitor human health ...

Discovery will allow more sophisticated work at nanoscale

The movement of fluids through small capillaries and channels is crucial for processes ranging from blood flow through the brain to power generation and electronic cooling systems, but that movement often stops when the channel ...

A path to new nanofluidic devices applying spintronics technology

Researchers in the ERATO Saitoh Spin Quantum Rectification Project in the JST Strategic Basic Research Programs have elucidated the mechanism of the hydrodynamic power generation using spin currents in micrometer-scale channels, ...

Laser-powered rover to explore moon's dark shadows

A laser light shone through the dark could power robotic exploration of the most tantalizing locations in our solar system: the permanently-shadowed craters around the moon's poles, believed to be rich in water ice and other ...

New study finds EPA mercury analysis is 'seriously flawed'

A new study by experts from prominent academic institutions finds that an EPA cost-benefit analysis of its Mercury and Air Toxics Standards is "seriously flawed." The authors assert that the analysis disregards public health ...

Scientists list four key actions to halt global warming

The latest edition of the JRC's Global Energy and Climate Outlook (GECO), identifies four technological dynamics in the energy sector that have the power to limit global warming to below 2°C if implemented simultaneously.

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Electricity generation

Electricity generation is the process of creating electricity from other forms of energy.

The fundamental principles of electricity generation were discovered during the 1820's and early 1830's by the British scientist Michael Faraday. His basic method is still used today: electricity is generated by the movement of a loop of wire, or disc of copper between the poles of a magnet.

For electric utilities, it is the first process in the delivery of electricity to consumers. The other processes, electric power transmission, electricity distribution, and electrical power storage and recovery using pumped storage methods are normally carried out by the electrical power industry.

Electricity is most often generated at a power station by electromechanical generators, primarily driven by heat engines fueled by chemical combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. There are many other technologies that can be and are used to generate electricity such as solar photovoltaics and geothermal power.

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