Abstract
SURELY there is nothing peculiarly ‘optical’ in the ‘paradox’ to which Mr. Smith refers in NATURE of Feb. 25. In respect of most measurable properties (for example, length and mass) systems can be arranged in a series such that each member, though indistinguishable from its immediate neighbours, is distinguishable from those more remote. In other words, the relations usually termed ‘equality’ in measurement are not transitive; though A = B, B = C, it does not follow that A = C.
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CAMPBELL, N. An Optical Paradox. Nature 121, 536 (1928). https://doi.org/10.1038/121536a0
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DOI: https://doi.org/10.1038/121536a0
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