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We examine the historical development of experimental techniques for measuring very low electrical resistance in materials, and the relevance of these advances to modern experiments in the field of superconductivity. Early developers of electrical transport methods recommended unique ways to mitigate errors and ensure accurate measurements when the sample resistance was vanishingly small. These protocols remain relevant to contemporary experiments, including electrical transport measurements on superconductors under pressure.
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Mark et al. (2026) studied this question.
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