Letter | Published:

Circular Ultra-sonic Grating in Liquids

Nature volume 140, page 425 (04 September 1937) | Download Citation

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Abstract

A. Žáček and V. Petržílka have recorded observations of radial and torsional vibrations of annular quartz plates cut perpendicular to the optical axis and have found that, with radial oscillations, standing ultra-sonic waves, which can be rendered visible by means of precipitated lycopodium, are formed in the hole in the middle of the crystal plate.

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Affiliations

  1. Institute of Physics, Charles' University, Prague. July 28.

    • J. EOVSKÁ

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DOI

https://doi.org/10.1038/140425b0

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