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Contributions to Terrestrial Magnetism; a very rare near complete set of 14 series parts [of 15; no part 14],
[plus; Sir Charles Shadwell: A Contribution to Terrestrial Magnetism; being the Record of Observations.. made during the Voyage of HMS Iron Duke to China and Japan, 1871-75, 1876], complete with 29 fine engraved maps most of which very large and folding, with 2 charts, (with very small and neat embossed uninked library name, virtually invisible), as extracted from The Philosophical Transactions of the Royal Society, 1840-1877. Quarto, total of 835pp [+10pp Shadwell's supplement], variously paginated. First Editions. An extremely rare, a very good and almost complete set of Sabine's epochal papers on terrestrial magnetism as they originally appeared in the Philosophical Transactions over a period of 37 years. London, [The Royal Society], 1840-1877. * "THE GREAT REMAINING PHYSICAL MYSTERY SINCE NEWTON'S WORK ON GRAVITATION." * "Edward Sabine (1788 -1883), Anglo-Irish astronomer, geophysicist, 30th President of the Royal Society. In 1818 he took part in Captain John Ross's first Arctic expedition. As the expedition's appointed astronomer, Sabine was told to assist Ross "in making such observations as may tend to the improvement of geography and navigation, and the advancement of science in general." Sabine was a diligent and careful scientist who stressed the need for the multiplication and repetition of observations, believing that a true understanding of terrestrial magnetism would only be arrived at after exhaustive observations had been made on a global scale. The following year (1819) he returned to the Arctic as a member of Parry's expedition in search of the Northwest Passage. During this expedition, Sabine noted that changes in magnetic intensity had taken place since his previous visit. He attributed such changes to either a fluctuation in the Earth's magnetic intensity or the shifting positions of the terrestrial magnetic poles. There was intense interest in figuring out what many called "the great remaining physical mystery since Newton's work on gravitation." By the beginning of the nineteenth century, it was widely recognized that the Earth's magnetic field was continually changing over time in a complicated way that interfered with compass readings. To solve this mystery once and for all, a number of physicists recommended that a magnetic survey of the entire globe be carried out. Suitable locations for the observatories were selected in both hemispheres and representations were made to despatch an expedition to the Southern Ocean to carry out a magnetic survey of the Antarctic. In the spring of 1839, the government approved the scheme. Observatories were to be established at Toronto, St. Helena, Cape Town, Tasmania and at stations to be determined by the East India Company, while other nations were invited to co-operate. Sabine was appointed to superintend the entire operation. Thousands of painstaking observations were taken by the staff - sometimes as frequently as every five minutes. These observations were all carefully scrutinised by Sabine back in Britain. In 1852, Sabine recognized from the Toronto records that magnetic variations could be divided into a regular diurnal cycle and an irregular portion. The irregularity correlated very closely with fluctuations in the number of sunspots. Sabine was the first to recognize that solar disturbances affected the Earth's magnetic environment. On 6 April 1852 he announced that the Sun's 11-year sunspot cycle was "absolutely identical" to the Earth's 11-year geomagnetic cycle. Throughout the 1840s and 1850s, Sabine continued to superintend the operation of magnetic observatories throughout the British Empire. The result was Sabine's magnum opus: as complete a magnetic survey of the globe as was then humanly possible." - Wikipedia
      [Bookseller: Jeffrey Stern Antiquarian Bookseller]
Last Found On: 2013-01-08           Check availability:      UKBookworld    


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