I think I know the basics like, it is the derivative of internal energy at constant entropy and volume or the partial derivative Helmholtz free energy at constant temperature and volume...
What is the value of chemical potential of a substance at equilibrium?
According to following article it is zero:
https://www.uni-muenster.de/Physik.AP/Demokritov/en/Forschen/Forschungsschwerpunkte/mBECwatfratcp.html
But I have seen in many articles that it is the change in chemical potential...
Hi,
It is often said one of the conditions Pope Urban III granted Galileo permission to write a book expressing his ideas on the solar system was that Galileo would include a paragraph written by the Pope on God's omnipotence. I have been trying unsuccessfully to locate this in a copy of "...
Thanks for the reply. I did further reading and think now have better understanding. Recent book(2) by Gorbunov and Rubakov has a good explanation (book 2 page 62). Entropy (also called isocurvature) perturbations happens when the medium has many components (radiation, dark matter baryons...
Hi,
I am self studying cosmology with the help of some textbooks ( books by Dodelson, Mukhanov, ...) and somewhat struggling to figure out what it is really mean by entropy perturbations. How is it different from adiabatic perturbations. Any help to get a better intuitive...