Paper, 'On the relation between the electrical qualities and the chemical composition of glass and allied substances. Part I' by Thomas Gray, Andrew Gray and J J [James Johnston] Dobbie

Description

The authors write: 'The relation between the composition of glass and its electrical qualities has been studied by only a few experimenters, and our knowledge of the subject is still comparatively small. With regard to resistance to electrical conduction through its substance, Dr Hopkinson has found among other interesting results, that potash or soda-lime glasses have a higher conductivity than flint glasses either light or dense; and his results as to electrical resistance confirm those given below. That the presence of a large quantity of alkali in glass is detrimental to its resisting quality has also been pointed out by Ekman. In two papers (“Phil. Mag.,” vol. 10, 1880, and “Proc. Roy. Soc.,” vol. 34, p. 199) [see PP/2/22], by one of the authors of the present paper, results are given of experiments on the variation of the resistance of glass of different kinds with temperature, and, more particularly in the second paper, with density and chemical composition.'

Annotations in pencil and ink.

Subject: Chemistry

Received 29 March 1884. Read 3 April 1884. Communicated by William Thomson.

A version of this paper was published in volume 36 of the Proceedings of the Royal Society as 'On the relation between the electrical qualities and the chemical composition of glass and allied substances. Part I'.

Reference number

PP/4/45

Earliest possible date

1884

Physical description

Ink and graphite pencil on paper

Page extent

20 pages

Format

Manuscript