The vector A is defined as the quantum version of the Laplace-Runge-Lenz vector,
where
The system Hamiltonian is given by
Show that
------------------------------------------------------------------
this problem confuse me for at least 2 years...
i can't derive it...
Why is the Fermi level a constant in thermal equilibrium?
just like PN diode (P=material 1 ; N=material 2)
the fermi levels are the same (Ef1=Ef2) in thermal equilibrium
i confused that
why there is no energy transfer
so that can judge each energy E will obey
rate from 1 to 2 ~...
The info is that my teacher gives to me & let me think about it
he just imply that I need the "Lorentz force and uncertainty principle"
maybe the atomic beam is electrically neutral and don't consider Lorentz force
but the free electron beam has charge not electrically neutral, it should use...
Here is the context :
----------------------------------------------------------------------------
In 1808, Malus found that the light can be polarized by sending it through a calcite crystal. In 1921, Stern and Gerlach found that when they sent an atomic beam (for example, alkali atomic...
Recently, I read the Stern-Gerlach experiment
and I have a question about the source
use free electrons beam instead of Ag atoms beam
is the screen still two lines (electron spin up & down)?
But the truth is that there is a region(pattern) not two obvious lines on the screen
because the...