Energy & Green Tech

How electric vehicles could fix the grid

Transportation is the single biggest source of greenhouse gas emissions in the United States, accounting for about a third of all emissions. We could quickly lower those emissions by electrifying vehicles, but there's just ...

Electronics & Semiconductors

New transistor could cut 5% from world's digital energy budget

A new spin on one of the 20th century's smallest but grandest inventions, the transistor, could help feed the world's ever-growing appetite for digital memory while slicing up to 5% of the energy from its power-hungry diet.

Energy & Green Tech

Researchers protecting solar technologies from cyberattack

New research from the University of Georgia suggests a novel approach to safeguarding one possible target of a cyberattack—the nation's solar farms. In a study published in IEEE Transactions on Smart Grid, a team in UGA's ...

Telecom

Image: Roof of the satnav world

A small forest of antennas sprouts from the roof of ESA's Navigation Laboratory, based at the ESTEC technical center in the Netherlands, which is among the most frequently satnav-fixed locations on Earth. This is also the ...

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Electric current

Electric current is the rate of flow of electric charge. The electric charge that flows is carried by, for example, mobile electrons in a conductor, ions in an electrolyte or both in a plasma.

The SI unit of electric current intensity is the ampere. Electric current is measured using an ammeter.

This text uses material from Wikipedia, licensed under CC BY-SA