Dulli Chandra Agrawal
Department of Farm Engineering
Banaras Hindu University
Varanasi 221005, India
Email: dca_bhu@yahoo.com
Abstract
The pressure-volume cycle for the regelation phenomenon is proposed, and it is shown to be a poorly competent phenomenon consistent with the slow movements of glaciers.
Introduction
Pirooz Mohazzabi [1] has described the phenomenon of regelation that initiates the passing of a string under load (Figure 1) through the ice without cutting it in half. According to him, “A simple explanation of this effect is that the pressure caused by the string makes the ice melt just below the string, the string slides down, and the water freezes again just above the string.” This so happens, as the melting point of ice falls under higher pressures [2, 3], resulting in the melting of ice below the string, and thereby the string falls under gravity. The melted water once again experiences one atmospheric normal pressure, and it freezes again by conducting heat to its neighbors; this process continues till the string reaches the end point of the ice.
References
- Pirooz Mohazzabi, The Physics of “String Passing Through Ice” Phys. Teach 49 429-431 (2011); Figure 1 is borrowed from this article.
- Mark W Zemansky, “The regelation of ice is a complicated phenomenon” Phys. Teach. 3 301–302 (1965)
- Alexey Chernoutsan, “The friction and pressure of skating” Quantum 4(6) 25-27 (1994); https://static.nsta.org/pdfs/QuantumV4N6.pdf
- Dulli C. Agrawal, Thermodynamic cycle of average annual rainfall over the globe, Lat. Am. J. Phys. Educ. 17 (1), 1306 (March 2023)
- C. Fowler, Encyclopedia of Atmospheric Sciences (Academic Press, 2003 Oxford)
- Scott C Watson, Glacier Movement, contribution in the book Geomorphological Techniques (British Society for Geomorphology Editors: L.E. Clarke, J. M. Nield 2015) Chapter 3
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