First mentions of bitcoin on Reddit Updated +Created
Prokaryotic elongation factor Updated +Created
Rogue trader Updated +Created
Stanford Research Park Updated +Created
Aufbau principle Updated +Created
Boring rule that says that less energetic atomic orbitals are filled first.
Much more interesting is actually determining that order, which the Madelung energy ordering rule is a reasonable approximation to.
Git tips / git log --graph Updated +Created
For the strong.
git log --abbrev-commit --decorate --graph --pretty=oneline master HEAD
Output:
* b4ec057 (master) 5
* 0b37c1b 4
| * fbfbfe8 (HEAD -> my-feature) 7
| * 7b0f59d 6
|/
* 661cfab 3
* 6d748a9 2
* c5f8a2c 1
If we also add the --simplify-by-decoration, which you very often want want on a real repository with many commits:
* b4ec057 (master) 5
| * fbfbfe8 (HEAD -> my-feature) 7
|/
* c5f8a2c 1
As we can see, this removes any commit that is neither:
  • under a branch or tag
  • at the intersection of too branches or tags
Google reverse image search Updated +Created
Half-silvered mirror Updated +Created
Why do multiple electrons occupy the same orbital if electrons repel each other? Updated +Created
That is, two electrons per atomic orbital, each with a different spin.
As shown at Schrödinger equation solution for the helium atom, they do repel each other, and that affects their measurable energy.
However, this energy is still lower than going up to the next orbital. TODO numbers.
This changes however at higher orbitals, notably as approximately described by the aufbau principle.
Hartree-Fock method for the helium atom Updated +Created
Hermite functions Updated +Created
Fresnel diffraction Updated +Created
Near field approximation to Kirchhoff's diffraction formula, i.e. when the plane of observation is near the object diffracting.
Git tips / Conflict resolution tool Updated +Created

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