Abstract
THE problem of sound signalling over considerable distances has a most important application to the question of safety of ships at sea in thick and foggy weather. This application, in the case of a maritime country like Great Britain, is probably more important than any other application of sound signalling.
The Principles of Sound Signalling.
By Morris D. Hart W. Whately Smith. Pp. v + 139. (London: Constable and Co., Ltd., 1925.) 12s. 6d. net.
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W., A. Sound Signalling. Nature 116, 856–858 (1925). https://doi.org/10.1038/116856a0
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DOI: https://doi.org/10.1038/116856a0