Skis makes ice slippery, suggests a new theory
A new theory suggested by Bo Persson, a scientist at Germany’s Jülich Research Center, explains the slippery behaviour of ice due to hard materials.
Persson came up with the theory while working on a mathematic equation. The theory is endorsed by experimental data and could revolutionise the construction of skis and the way it function.
The theory, as explained in The Journal of Chemical Physics, also helps enhance the understanding of the concept of ice friction. Ice friction is the main reason that lead to movement of glaciers and other natural processes related to ice.
The theory explains that ice by itself is not slippery, but it becomes so when a thin layer of water forms on it. This can happen in various ways. For instance, melting of ice due to frictional heat can accumulate a layer of water on it. A natural transition from solid to liquid phase can also lead to layer formation.
Persson’s equation shows that stress depends on the temperature of ice on the surface, which gets impacted when a hard material like a ski slides on it. Persson is now extending his research to study the impact of rubber on ice friction. This will help improve the design of winter tires and shoes.
According to webindia123.com, Persson's key breakthrough achievement is to link theory with experimental data to reveal the intricacies of the behaviour of ice, particularly ice friction. The practical implications of his research can be far-reaching as they promise to help make the icy winters more enjoyable and comfortable.
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