Recent content by quantasham

Hi guys, We all know that Helmholtz free energy, Gibbs free energy and Enthalpy are defined by Legendre transformation. For Enthalpy H=E+PV, I can understand it as the energy required to "displace the atmosphere" plus "creating the internal energy of system". What about Gibb free energy...

If I don't discretize my function, then, I have to find the coefficient by numerical integration. quad(f,-1,1) where my f depends on n (the index of coefficient). And Matlab just says something like "dimension mismatch". Do you guys know how to deal with it? I can actually do it like...

Plasma frequency for silver : 3.75(eV)-3.80(eV) reference: 1. Phys. Rev. 132, 1599 - 1602 (1963) 2. Phys. Rev. Lett. 5, 470 - 472 (1960) I try to use the formula suggested by Marcie, using n=5.86*10^22 (cm^-3) (from the book by Ashcroft) and I get 8.99(eV). Well, I hope someone can...