THE MARITIME TELEPHONE.
It is stated that Signor d'Azar's maritime telephone consists of two sections, or "sound collectors," one of which is lowered into the. water on each side of the vessel, both being connected by a special mechanism to a microphone provided with a vibrating- membrane. A movable hand indicates the direction of the sound waves upon a qtiadrant, which is placed on the deck, so that it is quite possible to learn the approach of a vessel and its course at a distance of five miles ifv. the darkest night or thickest fog. Should two vessels wish- to communicate with one another, they need only make use of a special clapper apparatus, the strokes against the side of one of the vessels being registered on a Morse machine in the other. All semaphores along the coast can also communicate with ships at sea by means of specially-constructed buoys.' Apparently remarks the "English Mechanic," it is an important invention, \but further details will be a\Vaited wit'li interest.
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Bibliographic details
Auckland Star, Volume XXX, Issue 274, 18 November 1899, Page 2 (Supplement)
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168THE MARITIME TELEPHONE. Auckland Star, Volume XXX, Issue 274, 18 November 1899, Page 2 (Supplement)
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