Energy & Green Tech

New storage battery more efficient and heat-resistant

The share of energy from renewable sources is constantly on the rise in Germany. At the beginning of 2020, for the first time ever, renewable energy was able to cover more than half of the electricity consumed in Germany. ...

Energy & Green Tech

House backs bill to boost 'clean energy,' enhance efficiency

The House has approved a modest bill to promote "clean energy" and increase energy efficiency while phasing out the use of coolants in air conditioners and refrigerators that are considered a major driver of global warming.

Automotive

New SUV is next step in VW's post-scandal electric offensive

Volkswagen is unveiling a battery-powered sport-utility vehicle that is headed for global markets including the United States and China, as the company takes a major step forward in its campaign to make electric cars a mass-market ...

Energy & Green Tech

Why electric vehicle ranges vary from EPA estimate

You've probably heard the phrase "your mileage may vary" with regard to how your real-world fuel economy compares to the EPA estimate. The adage refers to gasoline-powered vehicles, but the same applies to electric vehicles.

Energy & Green Tech

Tesla cuts battery cost on road to $25K model

Tesla on Tuesday said it is slashing battery costs to speed a global shift to renewable energy, and could have a $25,000 self-driving model available in three years or so.

Electronics & Semiconductors

Thin and ultra-fast photodetector sees the full spectrum

Researchers have developed the world's first photodetector that can see all shades of light, in a prototype device that radically shrinks one of the most fundamental elements of modern technology.

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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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