Abstract
RELAXATION spectra for different kinds of glass, all containing sodium and potassium as common constituents, have been obtained from lateral vibrations over a frequency-range from 5 to 1,500 c./s. It has been found that, in addition to relaxation by thermo-elastic currents, the internal friction at room temperature (26° C.) shows two other common peaks independent of the diameter, one at 50 c./s. and the other at 500 c./s. Evidence for the peak at 50 c./s. has already been given by one of us1.
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Kamel, R., Phys. Rev., 75, 1606 (1949).
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YOUSEF, Y., KAMEL, R. Relaxation Spectrum of Glass. Nature 167, 945 (1951). https://doi.org/10.1038/167945a0
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DOI: https://doi.org/10.1038/167945a0
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