Energy & Green Tech

Researchers develop an oxygen-ion battery

Lithium-ion batteries are ubiquitous today, but that does not mean that they are the best solution for all areas of application. TU Wien has now succeeded in developing an oxygen-ion battery that has some important advantages. ...

Energy & Green Tech

Making hydrogen out of thin air

A team of researchers at the University of Melbourne, working with a colleague from the University of Manchester, has developed a device that can use humidity from the air to make hydrogen gas. In their paper published in ...

Hi Tech & Innovation

Dry ice could prevent rail delays caused by 'leaves on the line'

Researchers from the University of Sheffield, in collaboration with Icetech Technologies, have used dry ice to develop a new solution to the problem of leaves on the line, which cause delays, cancellations and timetable changes ...

Energy & Green Tech

Scientists tap unused energy source to power smart sensor networks

The electricity that lights our homes and powers our appliances also creates small magnetic fields that are present all around us. Scientists have developed a new mechanism capable of harvesting this wasted magnetic field ...

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.

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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