A Comprehensive Treatise on Inorganic and Theoretical Chemistry

PLATINUM 69
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§ 11. The Thermal Properties of Platinum
J. F. Daniell * measured the thermal expansion of platinum and found that a
rod of unit length at 62°, became 1-009926 units just about the m.p. of the metal.
M. G. von Paucker observed for the coeff. of linear expansion 0-O411612 ; F. C. Calvert
and co-workers gave 0-0000068 between 0° and 100° ; A. Tissot, OOs8917
between 16° and 82° * H. Fizeau, 0-0588206, and later, for purified platinum 0-05890
at 20°, 0-05899 at 40°, and for the metal with 10 per cent, of iridium, 005884.
A. Matthiessen observed for the coeff. of cubical expansion between 7-52° and 97°,
^==«o(l -hO-O425540+O-O7lO402). Observations were made by M. Thiesen,
E. L. Nichols, and W. D. Flower. R. Benoit obtained values for the coeff. of linear
expansion ranging from ci=(8840-5+1-8902) X 10"», and