Frequency measurements in wireless telegraphy (1911)
Hyslop, William Henry · leaf 48
Fig. 21. both circuits have the same period but different damping, thecurve takes the form of Fig. 22, which differs but little fromFig. 21. This case applies particularly to two practical wire-less circuits in resonance, since owing to differences in construct- … Fig. 22. ion the damping will not as a rule be equal. Where the two fre-quencies also differ, the curve is a damped sine wave (Fig. 23).This is the phenomenon known in acoustics as beats.
Telegraph, Wireless · Theses
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