Harmonic analysis by means of linear combinations of ordinates
H. Labrouste, Mrs. Labrouste · Terrestrial Magnetism and Atmospheric Electricity · 1936
This memoir on the method of analysis by means of linear combinations of ordinates comprises three chapters. The first is devoted to the statement of the principle of the method and the examination of the properties of the simple combinations by which are formed the multiple and resultant combinations which are dealt with in the second chapter. In the latter, the curves of selectivity of the different combinations are also discussed. Lastly, Chapter III deals with the practical method of analysis based on the theoretical considerations developed in the first two chapters. A numerical example is given, which illustrates the method. The case of damped sine‐waves is considered both from the theoretical (Chap. I) and the practical (Chap. Ill) point of view. So as to facilitate the reading of the memoir, we have put in small print the various paragraphs which, important though they may be from a theoretical or practical point of view, may however be left aside on a first perusal.