Energy & Green Tech

Research team sets new efficiency record for solar cell technology

A team of researchers from the National University of Singapore (NUS) has set a new record in the power conversion efficiency of solar cells made using perovskite and organic materials. This technological breakthrough paves ...

Energy & Green Tech

The value of wind energy

Two teams of researchers from Pacific Northwest National Laboratory (PNNL) have shown that wind energy offers logistical, economic, and environmental value to consumers and utilities from the coast of Oregon to remote villages ...

Energy & Green Tech

Demand for rare minerals and metals creates eco-dilemma

According to the International Energy Agency (IEA), the demand for so-called critical raw materials (CRMs) will increase sevenfold by 2050. The reason for this is that our green, renewable energy technologies require far ...

Energy & Green Tech

Operating truck fleets with lowest possible emissions

Converting truck fleets to renewable energy is a goal of many fleet operators worldwide. This has also been recognized by HERE, a global navigation software company; the company is a joint subsidiary of German automakers ...

Energy & Green Tech

GM expands market for hydrogen fuel cells beyond vehicles

General Motors is finding new markets for its hydrogen fuel cell systems, announcing that it will work with another company to build mobile electricity generators, electric vehicle charging stations and power generators for ...

Electronics & Semiconductors

Reasserting US leadership in microelectronics

The global semiconductor shortage has grabbed headlines and caused a cascade of production bottlenecks that have driven up prices on all sorts of consumer goods, from refrigerators to SUVs. The chip shortage has thrown into ...

Business

Why merging Uganda's electricity sector agencies is a bad idea

Early in 2021, the government of Uganda approved a two-year plan to streamline state-run agencies for greater efficiency. The first phase of the merger targeted 77 agencies under 18 ministries. By the time parliament put ...

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Electricity

Electricity (from the New Latin ēlectricus, "amber-like"[a]) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many easily recognizable phenomena, such as lightning and static electricity, but in addition, less familiar concepts, such as the electromagnetic field and electromagnetic induction.

In general usage, the word 'electricity' is adequate to refer to a number of physical effects. However, in scientific usage, the term is vague, and these related, but distinct, concepts are better identified by more precise terms:

Electrical phenomena have been studied since antiquity, though advances in the science were not made until the seventeenth and eighteenth centuries. Practical applications for electricity however remained few, and it would not be until the late nineteenth century that engineers were able to put it to industrial and residential use. The rapid expansion in electrical technology at this time transformed industry and society. Electricity's extraordinary versatility as a source of energy means it can be put to an almost limitless set of applications which include transport, heating, lighting, communications, and computation. The backbone of modern industrial society is, and for the foreseeable future can be expected to remain, the use of electrical power.

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