Reference numberAP/31/2
TitlePaper, 'On the spontaneous electrical currents observed in the wires of the electric telegraph' by W H [William Henry] Barlow
DescriptionBarlow shares observations undertaken in consequence of certain spontaneous deflections having been noticed in the needles of the electric telegraph on the Midland Railway. He explains that the telegraph is on the principle patented by Professor Wheatstone and Mr Cooke, and the signals are given by deflecting a magnetic needle suspended in a coil of fine wire, to the right or left, by means of a galvanic battery. Annotations in pencil throughout. Includes a letter from [R S Ailley] to Barlow, dated 11 May 1848, sharing further observations.

Subject: Physics / Electricity

Received 15 May 1848. Communicated by Peter Barlow.

This paper was published in volume 139 of Philosophical Transactions as 'On the spontaneous electrical currents observed in the wires of the electric telegraph'.
Physical descriptionInk and graphite pencil on paper
Access statusOpen
Related materialDOI: 10.1098/rstl.1849.0006
Fellows associated with this archive
NA5788Barlow; Peter (1776 - 1862); mathematician1776 - 1862
NA7672Barlow; William Henry (1812 - 1902)1812 - 1902
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