Title: World Chart illustrating Whewell’s tidal theory for the Royal Society 1833 mapDescription: Chart of the World, between the latitudes of 60° N and 55° S. To accompany Mr. Whewell’s paper on the tides. Reference to Mr. Lubbock’s paper, 1831. The Roman figures show the time of high water in Greenwich time, at new and full moon. The italic figures show the time of high water in Greenwich time, at the place.'. An important scientific map produced to accompany William Whewell’s pioneering research on ocean tides, published in the Philosophical Transactions of the Royal Society. Extending globally between latitudes 60° north and 55° south, the chart defines tidal behaviour through the use of cotidal lines—a term coined by Whewell—linking coastal and oceanic locations that experience high (or low) tide at the same time. While the map acknowledges earlier work by John William Lubbock (1831), it represents Whewell’s decisive advance in synthesising vast quantities of observational data into a coherent, global, predictive model of tidal propagation. Whewell recruited thousands of volunteers at coastal locations worldwide to collect the observations required for his research, in what is now regarded as one of the earliest examples of citizen science. As one of the first printed world charts devoted to tidal science, the map marks a foundational moment in both physical oceanography and thematic cartography. . Walker, John & Charles. Published 1833 [dated]. Antique copperplate map. Size 42 x 97 cm | 16.5 x 38.0 inches. Condition: Good; suitable for framing. Please check the scan for any blemishes prior to making your purchase. Please contact us if you would like to arrange to view this map. This is a folding map. There is nothing printed on the reverse side, which is plain. Tags: 1833, Greenwich, Map, Philosophical Transactions of the Royal Society, Walker John & Charles, World
Reserve: $790.00
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