News tagged with electricity

Related topics: energy , solar energy , power , megawatts , renewable energy

Electric 'thinking cap' controls learning speed

(Medical Xpress)—Caffeine-fueled cram sessions are routine occurrences on any college campus. But what if there was a better, safer way to learn new or difficult material more quickly? What if "thinking ...

Mar 23, 2014
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Convalescing at home after a stroke

Once every three seconds, somewhere in the world, someone suffers what's commonly referred to as a stroke: a haemorrhage or infarction of the brain. Circa 75% of the people who survive a stroke are left with temporary or ...

Mar 14, 2014
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Real-time insight into our brain

Combining two imagine technologies, such as MRI for structure and MEG for activity, could provide a new understanding of our how our brain works.

Mar 04, 2014
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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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