The Story of the Atlantic TelegraphField, Henry M. (Henry Martyn)
History
The Story of the Atlantic Telegraph
Field, Henry M. (Henry Martyn)
Transatlantic cables
"Just when the signals from the Great Eastern ceased, a
magnetic storm of singular violence had set in. Unperceived by
us, not to be seen in the heavens, nor felt in the atmosphere,
the earth's electricity underwent a mysterious disturbance. The
recording instruments scattered about the kingdom, everywhere
testified to the fury of this voiceless tempest, and there is
every reason to suppose that the confusion of signals at midday
on Wednesday was due to the strange and unusual earth-currents
of magnetism, sweeping wildly across the cable as it lay in
apparently untroubled waters at the bottom of the Atlantic."
Said the Times:
"At Valentia, on Wednesday last, the signals, up to nine A.M.,
were coming with wonderful distinctness and regularity, but
about that time a violent magnetic storm set in. No insulation
of a submarine cable is ever so perfect as to withstand the
influence of these electrical phenomena, which correspond in
some particulars to storms in the ordinary atmosphere, their
direction generally being from east to west. Their action is
immediately communicated to all conductors of electricity, and
a struggle set up between the natural current and that used
artificially in sending messages. This magnetic storm affected
every telegraphic station in the kingdom. At some the wires
were utterly useless; and between Valentia and Killarney the
natural current toward the west was so strong along the land
lines that it required an addition of five times the ordinary
battery power to overcome it. This magnetic storm, which ceased
at two A.M. on Friday, was instantly perceptible in the
Atlantic cable."
But these explanations, so consoling to anxious friends on land, did not
comfort those on board the Great Eastern. They knew, alas! that the
cable was at the bottom of the ocean, and the only question was, if any
thing could be done to recover it.
Public-domain text, read in full here on John Shaqi.
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