Depths from Sound.
There is ;i Norwegian apparatus for the use of ships which consists of an electrical device whereby a so in id wave is sent to the .sea bottom in relatively shallow water, antl upon being reflected back to the vessel is received by .mother part of the same apparatus. An automatic record is made of the time elapsed between the departure and the return. Thus, explains an American contemporary. the veloc'ty of .sound in water being known, the depth is at once ascertained. The apparatus is designed. on make a continuous record, and it is asserted that it may be so constructed as to give an alarm when the water shallows to a pertain depth. UWU-JIiSMBO«CIS ZX'SmD
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Bibliographic details
Horowhenua Chronicle, 9 February 1912, Page 3
Word Count
120Depths from Sound. Horowhenua Chronicle, 9 February 1912, Page 3
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