Glossary

Checkpoint

Verify by direct matrix multiplication that $S_x|+\rangle_x = +(\hbar/2)|+\rangle_x$. If this does not work out, review matrix multiplication in Section 8.4 before continuing.

Learn More

Quantum Mechanics — Chapter 9: Eigenvalue Problems and Spectral Theory — How Measurement Works Mathematically
Quantum Mechanics — Chapter 10: Symmetry and Conservation Laws — Why Quantum Mechanics Loves Group Theory
Quantum Mechanics — Chapter 17: Time-Independent Perturbation Theory — The Non-Degenerate Case

Related Terms

$-mc^2\alpha^2/(2n^2) = -13.6\,\text{eV}/n^2$ $mc^2$ (b) 1. Delft (Hensen et al., Nature 526, 682, 2015) 1. Electron lines (solid lines with arrows): 11.1 14.1 14.2

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