Grade A crankery at Quantum University (part 2)

This is a repost of a section of my original quantum university post. I decided that I wanted to put it up as its own blog entry so that it would have some opportunity to be read in its own right. A comment has lead me to believe that the august body of Quantum University [...]

The Organic Chemistry Lie

Fallout from my learning about Molecular Orbital theory and Hartree-Fock. I've said repeatedly that Organic Chemistry is along the spectrum of pursuits that uses Quantum Mechanics. Organic Chemists learn a brutal regimen of details for constructing ball-and-stick models of complicated molecules. I've also recently discovered that chemistry --to this day-- is teaching a fundamental lie [...]

Building a Molecule; Time Spent in the Gap

How is a molecule built? Rather, what exactly is required to predict the electronic structure of a molecule using modern tools? I will use this post to talk about my time spent learning how to apply the classic quantum mechanical calculation of Hartree-Fock (note, this is plain old Hartree-Fock rather than multi-configuration Hartree-Fock or something [...]

The Classical version of NMR

As I've been delving quite deeply into numerical solutions of quantum mechanics lately, I thought I would take a step back and write about something a little less... well... less. One thing about quantum mechanics that is sometimes a bit mind-boggling is that classical interpretations of certain systems can be helpful to understand things about [...]

The Quantum Mechanics in the Gap

A big cat's paw of mine is trying to fill the space between my backgrounds to understand how one thing leads to another. When a biochemist learns quantum mechanics (QM), it happens from a background where little mathematical sophistication is required; maybe particle-in-a-box appears in the middle of a low grade Physical Chemistry class and [...]

The Difference between Quantity and Quality

I decided that I felt some need to speak up about a recent Elon Musk interview I saw on YouTube. You probably know the one I mean since it's been making the rounds for a few days in the media over an incident where Mr. Musk took a puff of weed on camera. This is [...]

Magnets, how do they work? (part 4)

(footnote: here lies Quantum Mechanical Spin) This post continues the discussion of how ferromagnets work as considered in part 1, part 2 and part 3. The previous parts dealt with the basics of electromagnetism, introducing the connections from Maxwell's equations to the magnetic field, illustrating the origin of the magnetic dipole and finally demonstrating how [...]

Magnets, how do they work? (part 3)

In this section I intend to detail the source of magnetic force, particularly as experienced by loops of wire in the form of magnetic dipoles. The intent here is to address ultimately how compass needles turn and how ferromagnets attract each other. I should start by asking for forgiveness. I've recently defended my PhD. While [...]

Disagreeing with “Our Mathematical Universe”

My wife and I have been listening to Max Tegmark's book "Our Mathematical Universe: My Quest for the Ultimate Nature of Reality" as an audiobook during our trips to and from work lately. When he hit his chapter explaining Quantum Mechanics and his "Level 3 multiverse" I found that I profoundly disagree with this guy. [...]