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The Quantized Hall Effect

This variation on a classical phenomenon makes it possible, even in an irregular sample, to measure fundamental constants with an accuracy rivaling that of the most precise measurements yet made

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Scientific American Magazine Vol 254 Issue 4This article was originally published with the title “The Quantized Hall Effect” in Scientific American Magazine Vol. 254 No. 4 (), p. 52
doi:10.1038/scientificamerican0486-52