Paper, 'On the limiting distance of speech by telephone' by W H [William Henry] Preece

Description

Preece writes: 'The law that determines the distance to which speaking by telephone on land lines is possible, is just the same as that which determines the number of currents which can be transmitted through a submarine cable in a second. The experimental evidence upon which this law is based was carried out in 1853 by Mr Latimer Clark (whose assistant I then was). The experiments were made by me in the presence of Faraday; many were his own; he made them the subject of a Friday evening discourse at the Royal Institution January 20, 1854, and they are published in his ‘Researches’ (vol. 3, p. 508).'

Annotations in pencil and ink throughout.

Subject: Physics

Received 17 February 1887. Read 3 March 1887.

A version of this paper was published in volume 42 of the Proceedings of the Royal Society as 'On the limiting distance of speech by telephone'.

Reference number

PP/10/17

Earliest possible date

1887

Physical description

Ink and graphite pencil on paper

Page extent

17 pages

Format

Manuscript