Science / Tides and Currents / Tide Predicting Machine: A mechanical analog machine especially designed to handle the great quantity of constituent summations required in the harmonic method. William Ferrel's Maxima and Minima Tide Predictor (described in Manual of Tides, U.S. Coast and Geodetic Survey, Appendix 10, Report for 1883) was the first such machine used in the United States. Summing only 19 constituents, but giving direct readings of the predicted times and heights of the high and low waters, the Ferrel machine was used for the predictions of 1885 through 1914. A second machine, developed by Rollin A. Harris and E. G. Fischer and summing 37 constituents, was used for the predictions of 1912 through 1965 (described in Manual of Harmonic Analysis and Prediction of Tides by Paul Schureman, U.S. Coast and Geodetic Survey Special Publication No. 98, 1958). Predictions are now prepared using an electronic digital computer.
Machine Adjective Synonyms: mechanism, device, apparatus, contrivance, appliance, instrument, implement, tool, utensil, gadget, contraption, gismo or gizmo
Machine Noun Synonyms: organization, system, ring, gang, cabal, clique, party, faction
Science / Tides and Currents / Solar Tide: (1) The part of the tide that is due to the tide-producing force of the Sun. (2) The observed tide in areas where the solar tide is dominant. This condition provides for phase repetition at about the MORE
Science / Tides and Currents / Solstitial Tides: Tides occurring near the times of the solstices. The tropic range may be expected to be especially large at these times. MORE