Sliding temperatures of ice skates
作者:
S. C. Colbeck,
L. Najarian,
H. B. Smith,
期刊:
American Journal of Physics
(AIP Available online 1997)
卷期:
Volume 65,
issue 6
页码: 488-492
ISSN:0002-9505
年代: 1997
DOI:10.1119/1.18576
出版商: American Association of Physics Teachers
关键词: 01.55;05.70;89.
数据来源: AIP
摘要:
The two theories developed to explain the low friction of ice, pressure melting and frictional heating, require opposite temperature shifts at the ice-skate interface. The arguments against pressure melting are strong, but only theoretical. A set of direct temperature measurements shows that frictional heating is the dominant mechanism because temperature behaves in the manner predicted by the theory of frictional heating. Like snow skis, ice skates are warmed by sliding and then cool when the sliding stops. The temperature increases with speed and with thermal insulation. The sliding leaves a warm track on the ice surface behind the skate and the skate sprays warm ejecta.
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