
TY  - JOUR
A1  - Macleod, DB 
T1  - A Theory Of Helium II
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1963
VL  - 16
IS  - 3
SP  - 323
EP  - 339
KW  - 
UR  - https://doi.org/10.1071/PH630323 
N2  - In this paper, a new possible explanation of the properties of helium II is developed. The basis of the argument is that, due to the internal cohesion of a fluid, potential energy resides within the repulsive field of the atoms. This potential energy will tend to appear as kinetic energy if the fluid expands, but, under its own vapour pressure, the sum of the potential and kinetic energies will be a constant in the system and be intrinsic to it. Arguments based on this conception lead to an understanding of many of the peculiarities of helium II and also to a simple expression for the velocity of the "second sound wave". 
ER  -

