diathermaneityn.
rare.
The quality of being diathermanous; = diathermancy n. 2, and diathermacy n.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > heat > transmission of heat > [noun] > perviousness
diathermaneity1835
diathermancy1837
transcalescence1850
diathermanism1858
diathermacy1867
transcalency-
1835 Faraday tr. Melloni in London & Edinb. Philos. Mag. 7 476 According to the diathermaneity [Fr. diathermanéïté] of the substance of which the plate consists.
1837 tr. M. Melloni in R. Taylor Sci. Mem. I. 69 Variations produced in the diathermaneity [Fr. diathermanéité] of white glass.
1854 J. Scoffern in Orr's Circle Sci. Chem. 276 The transmissibility of heat (diathermaneity) of various laminæ.
1877 H. Watts Dict. Chem. V. 61 Bodies which..afford a more or less free passage to rays of heat, are called by Melloni diathermic; while those which..entirely obstruct the passage of radiant heat, are called adiathermic; the corresponding properties..being called diathermacy and adiathermacy, sometimes also diathermaneity and adiathermaneity.
This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022).
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n.1835