Keywords: 099-tpm3-sk.jpg Scan made by uploader from copy of Thomson's design sketch for the third tide-predicting machine 1879-81 as published in Proceedings of the Institution of Civil Engineers vol 65 1881 --- too old to be in copyright Scan made by uploader from copy of Thomson's design sketch for the third tide-predicting machine 1879-81 as published in Proceedings of the Institution of Civil Engineers vol 65 1881 --- too old to be in copyright 2009-09-25 en J J Thomson died in 1940 Released into the public domain by the author Scanning copyrightable in the country of origin en wikipedia Terry0051 Image PD-Old-70 Original upload log page en wikipedia 099-tpm3-sk jpg 2009-09-25 23 45 Terry0051 3921×3793× 1887239 bytes <nowiki>Scan made by uploader from copy of Thomson's design sketch for the third tide-predicting machine 1879-81 as published in Proceedings of the Institution of Civil Engineers vol 65 1881 --- too old to be in copyright </nowiki> Kelvin Tide-predicting machines |