If I remember correctly, the derivation of the EUler Lagrange equations cannot be done when the Hamiltonian has an explicit time dependence in it...
Not sure though
I just saw Paul Bremmer (currently visiting the Netherlands) giving a Pers conference. He had this to say: "Ladies and Gentlemen. We got him." End pers conference
Very good.
One day you find yourself lost in mathland again...
You see x walking around and make a talk about the weather. After a while, x2 and ex join you. The conversation moves to more small talk when suddenly 1 comes running by. "The differential operator is coming!" he screams. x and x2 look around...
To be completely, entirely clear on this:
(mu)S=-gs*(mu)BS/hbar
So, the magnetic moment of an electron is proportional to the spin S, with in the proportionality factor gs=2 (the gyromagnetic ratio), [mu]B=9.2*10-24 A*m2 the Bohr magneton and hbar Planck's constant divided by two pi. (BTW...
Wow... This is amazing. I never knew I was that dumb.
I mean there is no way you can debunk this one. I mean where to start? A cube has four corners...A cube has four faces: the bottom and ceiling, the front and back, and then there are the two sides...
Where to start? (i'm really confused...
Will you please stop calling me (and other rational thinking people)a KAPO. I find it very offending to be compared to fascists. I don't call you a bloody stinking rascist, so stop calling other people like that. My Granddad was deported in WWII and died in one of their camps. It is really very...
One of the properties of an electron is that it has a magnetic moment...
What is inconsistent about that?
You do an experiment involving a magnet and an electron beam. It turns out the electrons react to the field. They want to line up to it due to their mag. moment (i.e. they experience a...
That's not inconsistent, andrew. It's the way real science develops. I had my education at the University of Leiden (where Uhlenbeck and Goudsmit also had their education. As a matter of fact I got my Master degree doing research in the same Lorentz insitute) where the idea of spin was...
Perhaps a small explanation of the experiment could help generating more repons. I, for one, am not in the mood to search the web for F. Hertz experiments...
Uhhhhmmmmm OK. So this thread is turned into American travesty again...(Israelians apparently like to identify themselves with americans so from now on I'll count you as an american) We americans are the best, the only ones that count and we will tell that to anybody. We do not know where (or...
That is because the actual mechanism behind superconductivity is not in the spin part. It's rather that there exists an attractive force between electrons. This force comes from the interaction between the lattice and the electrons: the so-called electron-phonon interaction. Instead of repelling...