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Keywords:
ELECTRIC,
ELECTRICITY,
TELEGRAPHS,
TELEGRAPHY,
COMMUNICATIONS,
SEMAPHORE,
HISTORY,
ELECTROSTATICS,
ELECTRODYNAMICS,
MAGNETIC,
MAGNETISM,
THEORY,
WORKING,
MATERIALS,
NEEDLES,
BATTERIES,
INSULATION,
WIRE,
INSULATORS,
GUTTA PERCHA,
LIGHTNING,
CONDUCTORS,
ATMOSPHERE,
ATMOSPHERIC,
WEATHER,
STORMS,
CURRENTS,
ACCIDENTS,
APPLICATIONS,
ELECTROMAGNETISM,
ELECTROMAGNETS,
PATENTS,
CIRCUITS,
COILS,
GALVANOMETERS,
RESISTANCE,
INSTRUMENTS,
BELLS,
SCREWPILES,
THERMOELECTRIC,
CALORIC,
LAWS,
ACTION,
EARTH
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© Thomas Telford and ICE
1852
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