Letter | Published:

Flow of Smoke through a Hole in Resonant Cavity

Nature volume 160, page 93 (19 July 1947) | Download Citation

Subjects

Abstract

Prof. G. D. West1 has used a smoke-filled cavity as a resonator and noted the stream of smoke issuing from a hole near the base; radiation pressure was suggested as a possible cause. In an alternative explanation2, Prof. E. N. da C. Andrade suggests that air is simply expelled during one half-cycle in a definite smoke-laden stream, and is drawn in during the next half-cycle, air being sucked in from all sides.

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References

  1. 1.

    Nature, 158, 755 (1946).

  2. 2.

    Nature, 159, 132 (1947).

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Author information

Affiliations

  1. National Research Council, Ottawa. March 13.

    • F. W. SIMPSON

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DOI

https://doi.org/10.1038/160093b0

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