Abstract
WE have been interested in seeing the results of Prof. Harrington's experiments on the motion of a curling-stone on ice, published in the Transactions of the Royal Society of Canada, and referred to in his letter in NATURE of Sept. 6, p. 351, which show a considerable increase in the friction for small velocities. This must produce, towards the end of a run, a couple tending to increase the spin of the stone; and no doubt explains the fact that the velocity of rotation remains nearly constant until very near the end. But it has little or no bearing on what we have regarded as our main problem (see NATURE of Mar. 15, 1930, p. 408), namely, the production of the curvature of the path of a stone, at a time when the instantaneous centre of the motion may be at a distance of 2 feet or more from the centre of the stone, a considerable distance compared with the radius of the cup.
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MACAULAY, W., SMITH, G. Curling. Nature 127, 60 (1931). https://doi.org/10.1038/127060a0
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DOI: https://doi.org/10.1038/127060a0
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