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BigRedRod
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I'm guessing this most likely has something some to do with Helium's superfluidity, but I'm still managing to draw a blank on what exactly stops it solidifying.
Any thoughts?
Any thoughts?
At what pressure ?Absolute Zero : What keeps Helium from becoming solid?
Absolute zero is the lowest possible temperature on the Kelvin scale, which is equivalent to -273.15 degrees Celsius or -459.67 degrees Fahrenheit. It is the point at which all molecular motion theoretically stops.
Helium is used to demonstrate absolute zero because it has the lowest boiling point of all the elements, making it easier to reach and maintain extremely low temperatures.
Helium is kept from becoming solid at absolute zero because it is a noble gas with a full outer electron shell, making it highly resistant to changes in temperature and pressure. Additionally, helium atoms do not have the necessary interactions with each other to form a solid lattice structure.
At absolute zero, helium becomes a superfluid, meaning it has zero viscosity and can flow without any resistance. This is due to the unique quantum mechanical properties of helium atoms at extremely low temperatures.
No, absolute zero is a theoretical concept and cannot be reached in practice. However, scientists have been able to reach temperatures extremely close to absolute zero, such as 0.0000001 Kelvin, in laboratory settings.