News tagged with international system of units

Graphene joins the race to redefine the ampere

A new joint innovation by the National Physical Laboratory (NPL) and the University of Cambridge could pave the way for redefining the ampere in terms of fundamental constants of physics. The world's first graphene single-electron ...

dateMay 12, 2013 in Nanomaterials
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Explained: Femtoseconds and attoseconds

Back in the first half of the 20th century, when MIT's famed Harold "Doc" Edgerton was perfecting his system for capturing fast-moving events on film, the ability to observe changes unfolding at a scale of microseconds—millionths ...

dateSep 18, 2012 in General Physics
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Toward a global microwave standard

Much of what is known about decadal climate change – and much of what appears on the evening weather forecast as well – comes from satellite-based remote sensing of microwave radiation at different levels in the ...

dateFeb 06, 2012 in Earth Sciences
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