Saturday, June 25, 2011

Interesting helium

Helium is a quite an interesting element. Other element when we decrease the temperature the motion of the atoms of the elements decreases and hence they start to freeze and become solid, but not in the case of Helium even you decrease the temperature to 1.15 K (-271.85 C), until we apply the 25 atmosphere of Pressure on it. This pressure make the atoms of Helium squash together and hence there motion decreases to a great extent, and reduce to just the vibration at it own place like a solid.

Now here comes Mr. Layman he has this to say...
"Hey i have this equation PV=nRT, which says that if the pressure increases the tempo will increase then how come Mr. Helium freezing himself at 25 atmospheric pressure."

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