Uudelleenjähmettyminen
Uudelleenjähmettyminen, also known as regelation in English, is a phenomenon observed in ice. It occurs when ice is subjected to pressure, causing it to temporarily melt at a lower temperature than its normal freezing point. When the pressure is removed, the water refreezes. This process is crucial for phenomena like ice skating, where the pressure of the skate blades on the ice causes a thin layer of water, reducing friction and allowing smooth gliding.
The scientific explanation for uudelleenjähmettyminen lies in the thermodynamic properties of ice. At standard atmospheric pressure,
When the pressure is relieved, the water's melting point rises back to 0 degrees Celsius. If the