Recent content by TeethWhitener

If you include instances where spin is treated as emergent, rather than in an ad hoc fashion, then the Dirac equation is fundamental to pretty much every process in chemistry. If you include the prediction of the positron, the same argument can be made for the prediction of holes in solid state...

Wow that question is written in an incredibly confusing way. I think you’re right, except for the part where you say Markovnikov addition puts the hydroxyl on the less substituted carbon. But I think that’s just a typo on your part, as you clearly understand in the next sentence that the product...

It’s an example of the isotope effect. This is a really complex topic, but a simplified explanation goes like this: the zero point energy of an oscillator decreases with increasing mass, so the O-18 phenol OH vibration will have a lower ZPE than O-16 H. In addition, the transition state ZPE to...

Can you give examples from the literature you’re reading? I’ve only ever seen the square, because that’s what ends up in the Fermi golden rule calculation.

1) Band structure diagrams are usually presented in reciprocal space rather than real space. 2) Band structure diagrams are generally one-electron mean field diagrams without explicit inclusion of electron correlation. Superconductivity is a two electron process. 3) Even if electron-electron...

Work is force times distance, not time. At 683 m/s, your rocket travels nearly 5 km over 7 seconds.

I have no idea where you’re getting this from. I think you’re trying to say that bonds can be modeled as harmonic oscillators. And of course harmonic oscillators have an equilibrium point. It’s at the bottom of the potential well. Also, the bond dissociation energy is a limit as the distance...

No, it’s the energy required to move the atoms infinitely far apart. Think of it this way: force is the gradient of energy (derivative of energy with respect to distance) $$F = \nabla E \left(=\frac{dE}{dx}\right)$$ At the equilibrium bond length, energy is at a minimum, meaning that the...

https://link.springer.com/article/10.1007/BF00526436

One of my favs: https://www.amazon.com/Electrochemistry-Chemists-Donald-T-Sawyer/dp/0471594687?tag=pfamazon01-20 The Bible: https://www.amazon.com/gp/aw/d/1119334063/?tag=pfamazon01-20

It was too revolutionary!

Seems @Vanadium 50 isn't the only one thinking about this: https://www.euronews.com/next/2023/09/12/scientists-believe-black-holes-are-lurking-much-closer-to-earth-than-we-previously-thought#:~:text=Data%20from%20the%20European%20Space,light%2Dyears%20from%20Earth%20respectively. My guess is...

1) The galaxy looks much more like a square than a cube. 2) the center of the galaxy has about 30 times the stellar density of the edge. Both of these together easily give two orders of magnitude.

I had typed out a long explanation but then realized it was far more math-based than your OP! The most intuitive explanation is probably that the Raman effect is a two-photon process. Since the EM field is represented by a vector, two-photon processes must be represented by a rank-2 tensor. We...

The answer is yes, most likely: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7906952/ The mechanism of action is still up in the air, as the chemical reactivity of PFAS itself is very low. However, physically, PFAS “looks” a lot like lipids, and can activate lipid-specific pathways and partition...