Section III, 1919 [183] Trans. R.S.C. 



On the Theory and Design of Electrically Operated A eriul and Submarine 

 Sound Generators and Receivers 



By Louis V. King, D.Sc, F.R.S.C. 



(Read May Meeting, 1919.) 



The mathematical theory of diaphragms vibrating in elastic 

 media, such as air or water, is developed at some length to afford a 

 rational basis for the practical design of submarine sound generators 

 and receivers. The results are applied to the construction of standard 

 submarine sound generators and receivers for the purpose of measur- 

 ing under-sea sound waves and studying the laws governing their 

 propagation. The data thus obtained are intended ultimately to 

 serve in the design of submarine fog alarm equipment. 



