The colours of tempered steel

Raman, C. V. (1922) The colours of tempered steel Nature, 109 (2726). pp. 105-106. ISSN 0028-0836

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The well-known and characteristic tints that appear on the surface of a tarnishable metal when it is heated in contact with air have been usually regarded as interference colours due to the formation of a thin film of oxide on the surface of the metal. The correctness of this explanation has, however, recently been questioned (A. Mallock, Proc. Roy. Soc., 1918), and rightly so, as a continuous film on a strongly reflected surface cannot on optical principles be expected to exhibit such vivid colours as those observed.

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Deposited On:04 Aug 2011 07:28
Last Modified:04 Aug 2011 07:28

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