Tektronix introduced the P6042 current probe in 1969, priced at $625 ($4100 in 2016 dollars). It has a probe you can clamp onto a wire carrying current. The output of the P6042 goes to an oscilloscope ...
Jeremy Jones, chief of the navigation team for the Cassini Project at the NASA Jet Propulsion Laboratory, replies: Accurate navigation in space depends on three factors: estimating the probe's current ...
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