Personalized learning Updated +Created
Inferior compared to self-directed learning, but better than the traditional "everyone gets the same" approach.
Video 1.
Project SOCRATES at Illinois University Urban-Champaign (1966)
Source. It is 2020, and we are not there yet. God!
Rack server Updated +Created
Free radical theory of aging Updated +Created
Hemoglobin Updated +Created
Photolithography Updated +Created
Long-read DNA sequencing Updated +Created
Silk Road bibliography Updated +Created
Camera obscura Updated +Created
Tactical and strategic nuclear weapons Updated +Created
Subtraction Updated +Created
Action role-playing game Updated +Created
Basis (linear algebra) Updated +Created
Hyperplane Updated +Created
Generalization of a plane for any number of dimensions.
Kind of the opposite of a line: the line has dimension 1, and the plane has dimension D-1.
In , both happen to coincide, a boring example of an exceptional isomorphism.
High-level synthesis Updated +Created
Recursive set Updated +Created
Same as recursive language but in the context of the integers.
History of Silk Road Updated +Created
Geographical division of England Updated +Created
git clone Updated +Created
Quantum number Updated +Created
Quantum numbers appear directly in the Schrödinger equation solution for the hydrogen atom.
However, it very cool that they are actually discovered before the Schrödinger equation, and are present in the Bohr model (principal quantum number) and the Bohr-Sommerfeld model (azimuthal quantum number and magnetic quantum number) of the atom. This must be because they observed direct effects of those numbers in some experiments. TODO which experiments.
E.g. The Quantum Story by Jim Baggott (2011) page 34 mentions:
As the various lines in the spectrum were identified with different quantum jumps between different orbits, it was soon discovered that not all the possible jumps were appearing. Some lines were missing. For some reason certain jumps were forbidden. An elaborate scheme of ‘selection rules’ was established by Bohr and Sommerfeld to account for those jumps that were allowed and those that were forbidden.
This refers to forbidden mechanism. TODO concrete example, ideally the first one to be noticed. How can you notice this if the energy depends only on the principal quantum number?
Video 1.
Quantum Numbers, Atomic Orbitals, and Electron configurations by Professor Dave Explains (2015)
Source. He does not say the key words "Eigenvalues of the Schrödinger equation" (Which solve it), but the summary of results is good enough.
Polar coordinate system Updated +Created

There are unlisted articles, also show them or only show them.