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 ...

Robotics

Artificial muscles help robot vacuum manipulators get a grip

The robot grippers designed by Professor Stefan Seelecke and his team at Saarland University can grip and manipulate objects with complex geometries. The system can adapt almost instantaneously to changes in form, switching ...

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.

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