1. The quotation by A. Einstein shown on page 1 is from Barut (1991, p. 108).
2. Omnés (1992) discusses Schrödinger’s cat (Schrödinger, 1935) as an example in which decoherence quickly reduces the problem to one of classical probabilities.
3. The gyromagnetic ratio g is defined as g = (magnetic moment)/(spin)/(e/2mc), and it has the (approximate) value g = 2 for the electron.
4. See Gottfried and Weisskopf (1984, p. 38).
5. See Pais(1982, (pp. 155 – 159).