4. Current measurement traceability
4.1 Traceability to the International System of Units (SI)
At present, the Josephson effect makes it possible to trace DC voltages of between a few hundred mV and ten V to the SI, with an uncertainty of the order of a few 10 -7 . The quantum Hall effect, meanwhile, enables resistors to be connected to the SI, again with an uncertainty of a few 10 -7 . By applying Ohm's law, we can determine the intensity...
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Current measurement traceability
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