Abstract
II. THE following considerations appear to have guided Osmond in beginning his investigations (see ante, p. 16). Bearing in mind the fact that molecular change in a body is always accompanied by evolution or absorption of heat, which is, indeed, the surest indication of the occurrence of molecular change, he studied with the aid of a chronograph what takes place during the slow cooling and the slow heating of masses of iron or steel, using, as a thermometer to measure the temperature of the mass, a thermo-electric couple of platinum and of platinum containing 10 per cent. of rhodium, converting the indications of the galvanometer into temperatures by Tait's formulæ.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
"Études Métallurgiques.", par Osmond, p. 6 (Paris: Dunod, 1888.)
Trans. American Soc. civil Engineers, xvi., 1887, p. 324.
Trans American Society Mechanical Engineers, ix., 1888, p. 155.
Proc. Roy. Soc., xlv., 1889, pp. 318, 445 and 457.
Proc. Inst. Civil Engineers, xciii. Part iii., 1888.
This was well shown in Prof. Akerman's celebrated paper on "Hardening Iron and Steel," Journ. Iron and Steel Institute, 1879, Part ii. p. 504.
Phil. Mag., xxvi., 1888, p. 209.
Address by Mr. Baker, Section G, British Association Report, 1885, p. 1182.
Times, August 19, 1889.
Journal of the Iron and Steel Institute, 1888, ii. p. 94.
Times, August 3, 1889.
Stahl und Eisen, ix. 1889, p. 728.
"Das Härten des Stahles," p. 78 (Leipzig, 1881), See also L"wenherz, Zeitsckrift für Instrumentenkunde, ix., 1889, p. 322.
Bull. U.S. Geo. Survey, No. 27, 1886, p. 51.
Sir Humphry Davey, Thomson's Ann. Phil., i. 1813, p. 131; quoted by Turner, Proc. Phil. Soc., Birmingham, vi., 1889, part 2.
Bull. U.S. Geo. Survey, No. 35, 1886, p. 51.
Phil. Mag., June 1884, p. 462.
Phil. Trans. Roy. Soc., clxxix., 1888, p. 339.
Rights and permissions
About this article
Cite this article
On the Hardening and Tempering of Steel1. Nature 41, 32–38 (1889). https://doi.org/10.1038/041032c0
Issue Date:
DOI: https://doi.org/10.1038/041032c0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.