Autograph manuscript titled:] The effect of heat upon the absolute magnetic force of bodies.
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Half page on a folded folio sheet (322 x 420 mm), 20 lines, with a few corrections, the sheet folded for posting, labelled on outside in ms 'Mr Faraday abstract' and 'Abstract of Dr Faraday's Paper', together with enclosing sheet folded for posting, addressed in Faraday's hand to 'Dr [William] Sharpey, Secretary, Royal Society, Somerset House' and with Faraday's signature in lower left corner, with red wax seal (broken), together in a cloth box. £12,500Autograph manuscript by Michael Faraday, an abstract of his paper for the 30th series, section 40, of his Experimental researches in electricity, published as a series of papers in the Transactions of the Philosophical Society between 1832 and 1855. The abstract itself was published before the Phil. trans., in Proceedings of the Royal Society, vol 7, pp 524-6 (1855). This is the only Faraday scientific manuscript I am aware of appearing recently for sale.The full paper was read before the Royal Society on November 22, and published in the Phil. trans. in 1856. Interestingly, the three papers of the 30th series were not included in the collected edition of the papers, volume three, which also appeared in 1855 (nor do they appear in the later reprints).This manuscript represents some of Faraday's final work on electromagnetism, and his experimental investigations of fields of force, the precursor of Maxwell's field theory. It continues the theme of sections 38 and 38, titled respectively 'Constancy of differential magnecrystallic force in different media' and 'Action of heat on magnecrystals'. It begins: 'Results were sought for by which the magnetic force of bodies already examined in the condition of magnecrystals might be compared with the whole paramagnetic or diamagnetic force of the same bodies, taken in the granular or amorphous state.' followed by an examination of the change of magnetic properties in relation to the temperature of the object.'During the 1850s when the stream of highly speculative papers on the nature of force and its transmission were appearing in the Philosophical Magazine . Faraday continued his experimental researches. The concept of the lines of force and the field now provided him with an overall picture of physical reality. The chain, in a sense, was complete. Only here and there was a link missing, and these Faraday sought to discover' (L. Pearce Williams, Michael Faraday, a biography, p 465). 'By the mid-1850s Faraday had gone as far as he could go. He had provided a new perspective for those who would look on all manifestations of force in the phenomenal world. His description of this perspective was fuzzy and imprecise but capable of clarification and precision if taken up by someone who could share Faraday's vision. Such a man was James Clerk Maxwell, who, in the 1850s and 1860s, built field theory on the foundations Faraday had laid' (DSB).Faraday's manuscripts are in the Royal Institution and the Royal Society, including the majority of papers read to these institutions. Letters by Faraday do occasionally appear for sale, but no scientific manuscript has been offered on the market in my experience.Both enclosing sheet and manuscript are on paper watermarked 'W. Stradling 1851'.For the published version see Jeffreys 427 and Wheeler Gift 2998. Buchnummer des Verkäufers 2692
Titel: Autograph manuscript titled:] The effect of ...
Verlag: [London, not after November 22 1855]
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