Recent content by Alexis21

Thank you for your answer :) I have got a question on that: What does it exactly mean when you say 'Now do an isobaric process'. I don't see how the C_p drops in.

Hello, I want to show: C_p - C_v = -T \big( \frac {\partial V}{\partial p} \big)_{T,n} \big( \frac {\partial p}{\partial T} \big)_{V,n}^2 I started by doing this: C_p - C_v= \big( \frac {\partial H}{\partial T} \big)_{p,N} - \big( \frac {\partial U}{\partial T} \big)_{V,n}...

Hello, why is <j' m' | j m>=0 if j \not= j' \; \text{or} \; m \not= m' j and m are describing states. I don't understand why an 'empty bracket' behaves like that.

Hello, i am a beginner in quantum mechanics and i have those basic questions on the bra-ket notation: Which dimension has a ket | \phi > describing a state normally? Maybe \quad C ^n? Which dimension has a bra-ket <\psi | \phi >then? Maybe \quad C ? How do you get the matrix...

Thank you!

Hello everybody, why is the adjoint of a bra-ket like this: < \phi | \psi >^+ = < \psi | \phi > Is it a definition or can it be derived somehow? Thanks :)