- quantum electrodynamics, 1
- quantum fluctuations, 1
- quantum numbers, 1, 2
- quantum spin, 1, 2;
- see also angular momentum
- quantum theory, 1, 2, 3, 4, 5, 6, 7, 8, 9 n. 3, 10 n. 11, 11 nn. 10, 12; 12 n. 13, 13 n. 5;
- computation, 1;
- unpredictability, 1, 2, 3 n. 5;
- probability, 1, 2
- quantum waves, 1, 2, 3, 4, 5 n. 6, 6 n. 8;
- see also orbitals, waves: interference, waves: superposition
- quantum weirdness, 1, 2, 3
- quarks, 1, 2, 3, 4, 5, 6, 7, 8 n. 10;
- bottom-quarks, 1;
- charm-quarks, 1;
- down-quarks, 1, 2;
- indistinguishability, 1;
- strange-quarks, 1;
- top-quarks, 1;
- up-quarks, 1, 2;
- see also anti-quarks
- quasars, 1, 2, 3
- Queen Mary, University of London, 1 n. 6