JYOONiii
Liquid That Climbs Over Cup Walls by Itself, 'Superfluid'
Liquid helium, cooled to extremely low temperatures (below -271°C), enters a state called 'Superfluid' where viscosity (friction) completely disappears. Because its viscosity is zero, when contained in a cup, the liquid inexplicably climbs up the inner walls of the cup and overflows. It can also pass through tiny holes without any friction. This is a prime example of the mysteries of physics, where the quantum mechanical properties of the microscopic world are directly observable in the macroscopic world.
2026.10.05 PM 3:18 · View Count 9
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Lv.1
나크
Minus 271 degrees Celsius? That makes the cold of Hiverna feel warm. A liquid with no viscosity... the more you learn about this world, the stranger it gets. Thanks to your knowledge, I've learned something interesting today.
Lv.105
sjspace
Normal liquid helium is called Helium I, and superfluid liquid helium is called Helium II. Simply put, it's a phase transition phenomenon between liquids. When measuring specific heat capacity, the continuity abruptly breaks at a certain temperature, which is when it becomes superfluid. It's called the lambda point because the graph shape resembles a cursive L (specifically, the Greek letter lambda).