, PBS, 2003, www.pbs.org/opb/einsteins wife/index.htm; Holton 2000, 191; Robert Schulmann and Gerald Holton, “Einstein’s Wife,” letter to the
, Oct. 8, 1995; Highfield and Carter, 108–114; Svenka Savi
, “The Road to Mileva Mari
-Einstein,” www.zenskestudie.edu.yu/wgsact/e-library/e-lib0027.html#_ftn1;
Christopher Bjerknes,
, home.com cast.net/~xtxinc/CIPD.htm; Alberto Martinez, “Arguing about Einstein’s Wife,”
, Apr. 2004, physicsweb.org/articles/world/17/4/2/1; Alberto Martinez, “Handling Evidence in History: The Case of Einstein’s Wife,”
, Mar. 2005, 51–52; Zackheim, 20; Andrea Gabor,
(New York: Viking, 1995); John Stachel, “Albert Einstein and Mileva Mari
: A Collaboration That Failed to Develop,” in H. Prycior et al., eds.,
(New Brunswick, N.J.: Rutgers University Press, 1995), 207–219; Stachel 2002a, 25–37.
79
. Michelmore, 45.
80
. Holton 2000, 191.
81
. Einstein to Conrad Habicht, June 30–Sept. 22, 1905 (almost certainly in early September, after returning from vacation and getting to work on the
paper).
82
. Einstein, “Does the Inertia of a Body Depend on Its Energy Content?,”
18 (1905), received Sept. 27, 1905, CPAE 2: 24.
83
. For an insightful look at the background and ramifications of Einstein’s equation, see Bodanis. Bodanis also has a useful website that includes further details: davidbodanis.com/books/emc2/notes/relativity/sigdev/index.html. The calculation about the mass of a raisin is in Wolfson, 156.
CHAPTER SEVEN: THE HAPPIEST THOUGHT
1
. Maja Einstein, xxi.
2
. Folsing, 202; Max Planck,
(New York: Philosophical Library, 1949), 42.
3
. More precisely, the definition that Richard Feynman uses in his
(Boston: Addison-Wesley, 1989), 19-1 is, “Action in physics has a precise meaning. It is the time average of the kinetic energy of a particle minus the potential energy. The principle of least action then states that a particle will travel along the path that minimizes the difference between its kinetic and potential energies.”
