Abstract
DR. N. R. CAMPBELL in his interesting letter in NATURE of November 24 says that the belief that matter is real is quite unaffected by the principle of relativity, if the word “real” is used in the commonsense way, which is the only way in which the notion of reality is ever used in physics. He also says that the principle of relativity may lead us to assert that some things are real which we should otherwise have asserted to be not real. With these assertions I am in cordial agreement.
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JEFFREYS, H. Relativity and Materialism. Nature 108, 568–569 (1921). https://doi.org/10.1038/108568d0
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DOI: https://doi.org/10.1038/108568d0
