Open AccessDipole moments and molecular structure. Part I.— A simple resonance method for the measurement of dielectric constants
Publication year - 1932
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1932.0078
Subject(s) - resonance (particle physics) , dielectric , dipole , oscillation (cell signaling) , rlc circuit , moment (physics) , lc circuit , simple (philosophy) , conductivity , materials science , voltage , equivalent circuit , nuclear magnetic resonance , condensed matter physics , chemistry , physics , optoelectronics , atomic physics , capacitor , classical mechanics , quantum mechanics , biochemistry , philosophy , epistemology
Numerous types of resonance methods for the measurement of dielectric constants have been described by different investigators. That detailed in the present communication has no claim to originality, but it is a simple, whilst at the same time reliable, form, which has proved to be very useful for the measurement of the dielectric constants of dilute solutions for the purpose of dipole moment determination. A fairly powerful oscillator is used, enabling the valveless resonance circuit to be some distance removed from it, whilst still receiving ample “pick-up” for the measurements. Resonance in the pick-up circuit is detected by means of a low-resistance thermo-junction, introduced directly into the circuit. The resistance thus introduced does not damp the oscillation unduly. The very small conductivity of the solvent liquids employed does not produce any appreciable error owing to the current resonance not occurring at the same tuning capacity as the voltage resonance.