The Accuracy of Tide-predicting Machines

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 1922 English Publisher:Springer Science and Business Media LLCJournal:Nature, volume 109, pages 239-240 (issn: 0028-0836, eissn: 1476-4687,

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Authors: Doodson, A. T.;

doi: 10.1038/109239a0 , 10.1038/109479b0

The Accuracy of Tide-predicting Machines

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Abstract

IT seemed to me that Mr. Marmer's first letter left the impression that the U.S.A. machine is one that is free from serious errors of the order of magnitude of those of the British machines, and I raised the question of proof. I said that I should be very glad to know that this machine could produce hourly heights to within 0.05 ft. with a spring range of 30 ft. I questioned whether it would or would not give errors of 0.4 ft. in such a case. If my doubts are warranted, then the U.S.A. machine also is subject to serious errors, which, as I suggested, would prohibit its use for the research work mentioned above in Mr. Marmer's last paragraph.

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