Recent content by Simobartz

the problem is that, if the chamber is on the right, the voltage difference at equilibrium across it is zero. While, on the left it is Vo. And the voltage difference is an important property for an ionization chamber. So, what do you mean when you say that they are mathematically equivalent?

I'm delving into the topic of ionization chambers, but as someone without a background in electrical engineering, I'm finding the equivalent circuits a bit challenging to comprehend. Specifically, I'm puzzled by the placement of the chamber's capacitance and any parallel capacitance in the...

I think that if possible it should be easy to give an example. Am i asking something wrong?

Hi, thanks for the reply. Can you give me an example in which Helmholtz free energy is minimized by the equilibrium state for fixed temperature and volume? If possible, can you use an ideal gas? Sorry for insisting in asking the example but i feel like it is really important in this case to...

Hi, I don't understand what does it mean that at equilibrium the proper thermodynamic potential of the system is minimized. For example on the book Herbert B. Callen - Thermodynamics and an Introduction to Thermostatistics it is written: Helmholtz Potential Minimum Principle. The equilibrium...

Thanks for these answers, now I'm quite ok with point 2 and 3. I also read the wikipedia article as you suggested and it was indeed useful. I still have a some doubt about point 1. For what i understand Bloch states are stationary states of the electron in a periodic potential. What do you mean...

Thanks again for replay. I think your words are on point because I've read something similar on my notes. Hoping to not bother you too much i will write for every point what i don't understand. I know for sure there is something that I'm missing out, i feel like I'm not looking at the problem...

Thanks for replay, that is just a quote from my book. I'll write here the complete paragraph so that you have more context. "The Bloch states provide us with a sound explanation for the existence of energy bands, which we conjectured using a qualitative argument about residence time, and in...

I'm reading about Bloch states, these the are states of electrons in a periodic potential. What i know is that the electron in a Bloch state is shared between many ions and it is a stationary state. However, for a 1-dimensional model I've read that at the edge of the first Brillouin zone, when...

Hi, it's for my personal understanding, no schoolwork I've seen an example (it is written below) in which the principle of maximum entropy is used to determine the state of equilibrium of a system and, since the minimization of the proper potential at equilibrium is correlated to the principle...

Summary: Request for an example of minimum energy principle usage The minimum energy principle states that, for a system at constant entropy, volume and other extensive quantities, the internal energy is minimized at equilibrium. Can you give me an example in which, using this principle, is it...

In hamiltonian formalism we have the generalized coordinates ##q_i## and the conjugates moments ##p_i##. For a dipole in a give magnetic field ##B## the Hamiltonian is ##H=-\mu B cos \theta## where ##\theta## is the angle between ##\vec \mu## and ##\vec B##. Can i consider ##\theta## or ##cos...

I think the solution is: $$dU=\delta W_{prop}$$ $$dU=TdS-PdV$$ $$dV=0$$ then, $$TdS=\delta W_{prop}$$ and so $$dS=dU/T$$ and by the way, it correct to say that, if the transformation between the initial and the final state would happen in a reversible way then the heat transfer could be...