George Biddell Airy to Faraday   19 December 1853

1853 Decr. 19

The time occupied by the passage of a galvanic pulse from Greenwich to Brussels (about 170 miles under earth and water, and 100 miles in air), is between 1/9 and 1/10 of a second of time1.

GBA

Professor Faraday

1
See A.B.G. [i.e. Airy], “Telegraphic Longitude of Brussels”, Athenaeum,14 January 1854, pp.54-5.

Please cite as “Faraday2767,” in Ɛpsilon: The Michael Faraday Collection accessed on 27 April 2024, https://epsilon.ac.uk/view/faraday/letters/Faraday2767