Recent content by solidspin

H2O is really not truly magnetic. When you say "magnetic" you probably mean "ferromagnetic" or that it has a permanent magnetic moment. Water can't, because there's no "spot" where unpaired electrons could permanently "live". Water is paramagnetic, which means that it has a slight magnetic...

it's a great question...but we already know that spacetime has a temperature (xbar = 3K). Furthermore, the WMAP data demonstrate that there are even slight local variations in this mean temperature. So, since the empirical data are quite reproducible, the next question is, as Jonny_trig...

all - Alexander Shulgin (Sasha, to his colleagues) is somewhat infamous for his very excellent work in psychotropics and psychoactive drugs. He is nevertheless a very well-respected organic synthetic chemist.

Dr Chinese has a great sense of humor. SimonA - there are no holes in the PT - perhaps there was one until we found Tc, but other than that... Like Malleus was saying, it's a bit complicated...There are 4e total in the 1s, 2s shells. After that, 6p (2x, 2y, 2z) then 10d (2xy 2xz, 2yz...

We use density matrices all the time w/r/t our pulse sequences in solid-state NMR. They're extremely powerful from a practical pov, b/z the off-diagonal terms represent coherences w/ very useful physical meaning. A reasonable book w/ some very good practical application is called Spin...

We use density matrices all the time w/r/t our pulse sequences in solid-state NMR. They're extremely powerful from a practical pov, b/z the off-diagonal terms represent coherences w/ very useful physical meaning. A reasonable book w/ some very good practical application is called Spin...

leoant - While you are numerically correct, for every atomic orbital there can be only one molecular orbital, HOMO actually stands for 'highest occupied molecular orbital and LUMO stands for lowest unoccupied molecular orbital. This threshold is exactly what physicists refer to as the Fermi...

Hi, all - Orbitals take on very specific shapes, but it's within those shapes that you have the "hazy" electron density you described. You can look them up: s, p, d, f, g, etc. The shapes themselves are really beautiful. They are actually a special class of polynomials called "Legendre...

molecular orbitals photon79 - I posted an answer to your question in the other thread. Molecular orbitals are, like marlon said, linear combinations of atomic orbitals. While he is correct that we can only solve for H, H2, He exactly, the approximation methods are used extensively for...

Photon79 - good question. Molecular orbitals are different from atomic orbitals, though molecular orbital theory states that for every atomic orbital, you get exactly one matching molecular orbital. When 2 atoms make a molecule, they of course share the electrons. The s, p, d, f, g etc...