Abstract
IN the course of some experiments recently carried out in these laboratories, a curious series of annular markings was observed in a glass tube through which air, carrying water-vapour and powered charcoal, was passing under diminished pressure. The accompanying photograph (Fig. 1) shows the regularity of the distribution of the rings, of which 48 occupied a length of one decimetre. The diameter of the tube was 4.5 mm., and the pressure at the time of the experiment was approximately 600 mm. of mercury.
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CREWS, S., HYMAS, F. Vibrating Air Column of High Frequency. Nature 124, 793 (1929). https://doi.org/10.1038/124793b0
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DOI: https://doi.org/10.1038/124793b0
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