Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Letter
  • Published:

Coefficient of Restitution of Coals

Abstract

In a previous note1 it was mentioned that mechanical properties are involved in the Stopes' classification of the petrological constituents of coals2, and they are of interest in any general study of the physical properties of coals. Much of the previous work on this subject has been undertaken from the point of view of mechanical failures in mines, or breakage in handling. Stress-strain relationships for coals have been obtained3 by compression methods using large-scale engineering test machines, and while our experiments were in progress Bangham and Maggs4 reported measurements of the elastic moduli of coals in expansion on adsorption of vapours and in mechanical compression on a small scale.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others

References

  1. Cannon, and George, Nature, 150, 690 (1942).

    Article  ADS  CAS  Google Scholar 

  2. Stopes, Fuel, 14, 4 (1935).

    CAS  Google Scholar 

  3. Holland, Amer. Inst. Min. Met. Eng., Tech. Pub. 1406 (1942) 19 refs.

  4. Bangham, and Maggs, "Ultrafine Structure of Coals and Cokes" (B.C.U.R.A., 1944).

  5. Bennett, Brown, and Crone, J. Inst. Fuel., 10, 22 (1936); 14, 111 (1941).

    Google Scholar 

  6. Heywood (discussion of ref. 5 above), J. S. Wales Inst. Eng. (October 1941).

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

CANNON, C., GEORGE, W. Coefficient of Restitution of Coals. Nature 155, 787–788 (1945). https://doi.org/10.1038/155787a0

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1038/155787a0

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.

Search

Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing