Advertisement

Tribology Letters

, 68:2 | Cite as

Comment on “A Scratch-Guide Model for the Motion of a Curling Rock”

  • Edward Lozowski
  • Mark R. A. ShegelskiEmail author
  • Mitchell Hawse
  • Seth Lowry
  • Caleb Sample
  • Matthew Reid
Comment
  • 49 Downloads

Abstract

For several years, there has been disagreement in the literature over the “scratch-guiding mechanism” first published by Nyberg et al. (Wear 301:583–589, 2013) in 2013 and recently quantified by Penner (Tribol Lett 67:35.1–35.13, 2019) in 2019. According to this proposal, the lateral motion of curling rocks can be influenced by pre-existing scratches on the ice. In particular, it is argued that scratches made by the front of the running band can “push” the back of the running band to the left or to the right, depending on their orientation. We offer here a critique of the Penner paper (Penner in Tribol Lett 67:35.1–35.13, 2019), alluding inter alia to recently published experimental results (Shegelski and Lozowski  https://doi.org/10.1177/1754337118821575, 2019), which clearly demonstrate that scratches made by the running band of a curling rock have no influence on the trajectories of a subsequent rock travelling over those scratches. We also point out some apparent inconsistencies and deficiencies in the Penner model itself.

Keywords

Null effect Scratches made by running band of curling rock Lateral deflection Covering ice in scratches Curling rocks sliding over scratched ice Scratches have no effect on motion of rocks 

References

  1. 1.
    Penner, R.: A scratch-guide model for the motion of a curling rock. Tribol. Lett. 67, 35.1–35.13 (2019)CrossRefGoogle Scholar
  2. 2.
    Shegelski, M., Lozowski, E.: Null effect of scratches made by curling rocks. J. Sports Eng. Technol. (2019).  https://doi.org/10.1177/1754337118821575 CrossRefGoogle Scholar
  3. 3.
    Honkanen, V., Ovaska, M., Alava, M.J., Laursonn, L., Tuononen, A.J.: A surface topography analysis of the curling stone curl mechanism. Sci. Rep. 8, 8123.1–8123.8 (2018)CrossRefGoogle Scholar
  4. 4.
    Shegelski, M.R.A.: Null-effect-of-scratches-made-by-curling-rocks: https://curling.opened.ca/ (Null-Effect-of-Scratches-Made-by-Curling-Rocks)Google Scholar
  5. 5.
    Nyberg, H., Alfredson, S., Hogmark, S., Jacobson, S.: The asymmetrical friction mechanism that puts the curl in the curling stone. Wear 301, 583–589 (2013)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Edward Lozowski
    • 1
  • Mark R. A. Shegelski
    • 2
    Email author
  • Mitchell Hawse
    • 2
  • Seth Lowry
    • 2
  • Caleb Sample
    • 2
  • Matthew Reid
    • 2
  1. 1.Department of Earth and Atmospheric SciencesUniversity of AlbertaEdmontonCanada
  2. 2.Department of PhysicsUniversity of Northern British ColumbiaPrince GeorgeCanada

Personalised recommendations