Recent content by heumpje

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

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...

Yes, amazing isn't it. That you can find this sort of stuff on the web for free...let's just say I tought that, that only applied to porn

Auch... That IS sort of a miss there russ. The spin IS the magnetic moment. http://scienceworld.wolfram.com/physics/SpinMagneticDipoleMoment.html

It's already in the name...sad, very very SAAAD

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...

We should start a new forum: development of observations... I've never seen a diagram of an atom reaching a lower energy level.

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...

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...

Hi there, What do you mean by epsilon...It's a greek letter, not a state of matter. About the second point. That depends on how long you take the moment. After the first second there were already atoms... It started out with a hot plasma of quarks if that's what you mean.

Because two particles only deliver an amount of energy that can only be detected by the best detectors. To get a sufficient amount of energy you would need an apparatus that is not rendable anymore. Such an apparatus WOULD be a technical challenge.

Also: You never know which electron you're looking at. All electrons are identical. Suppose you have only two of them. You cannot put a tag on one of them and follow it around. After a short time they might have interchanged (or not) without you ever noticing. As integral said it is al...

Just to put in some aspect that you're theory should have: it should comply with and explain some observed behaviour. In other words it has to agree with experiments. Setting up a theory that shows that superconductors can't exist is obviously a dumb theory since I can show you a superconductor...