608 INDEX
Berlin, University
of: AE’s
course on
relativ-
ity
at, 44-66
Berliner,
Arnold
(1862-1942), 231,
232n
Bernays,
Paul
(1888-1977):
critique
of
spe-
cial
relativity, 11,
18n
Bernoulli,
August
(1879-1939), 39n;
AE’s
comments
on
abilities
of, 39n;
AE
on
work
by,
32
Besso,
Michele
(1873-1955):
letter from
AE,
18n, 147, 148,
338n, 370n, 398n, 402n,
417, 552n, 554n;
AE and Besso’s
manu-
script
on
motion of
perihelion
of
Mercury,
24n,
243n
Beta
rays,
458
Black-body
radiation.
See Radiation,
black-
body
Blue of
sky,
577
Bohr,
Niels
(1885-1962), 147;
second rule
of, 369, 388, 395;
spectral theory
of, 364,
368, 388
Boltzmann,
Ludwig
(1844-1906), 424,
577
Boltzmann’s
constant, 366,
384
Boltzmann distribution for
stars,
542
Boltzmann
principle, 30,
36-37, 39n, 366,
376, 385
Born,
Max
(1882-1970),
407
Brill,
Alexander
(1842-1935),
133n;
AE’s
review of book
by,
132
Brownian
motion, 33, 365, 376, 389, 398n,
577,
579n
Buek, Otto,
71n
Canonical
equations,
556, 557, 575
Carathéodory,
Constantin
(1873-1950):
let-
ter
from
AE,
578n;
letter
to AE,
578n
Cathode
rays:
192;
motion
of, in
electromag-
netic field,
458
Causality, 109, 130n,
227,
286-287
Celestial
mechanics, 22,
433, 495;
Karl
Schwarzschild
on,
359-360
Chaotic
systems, theory
of
classical,
567n
Christoffel,
Elwin
(1829-1900):
and differ-
ential
calculus, 90, 93, 216, 218,
284
Christoffel
symbol, 89,
219, 306, 307, 308,
349
Classical mechanics,
286, 365,
368,
458, 468,
493,
494;
addition of velocities
in,
434-
435, 444, 450;
foundations of, 472-474;
and molecular
motion, 21, 250-252,
389;
principle
of
relativity
of, 48, 285,
432-
433;
and
quantum
theory,
22, 252, 261n,
364, 368, 370n, 382;
space
and time
in,
279-280, 288-289, 430-431, 442, 444,
446, 462, 517-518, 524, 528, 532; and
special relativity,
285, 453, 454, 455,
527.
See
also Galilean mechanics and Newto-
nian mechanics
Clock, 76,
101,
285, 289, 440, 530;
behavior
of, in
gravitational
field,
127,
333-335,
490-491, 492,
500-501,
512-514,
549;
moving,
53,
135, 290,
449,
477-480,
512-
513
Clock
paradox, Joseph
Petzoldt’s
exposition
of, 5n
Cohn,
Emil
(1854-1944):
AE
on
article
on
space-time by,
4,
5n;
Coil, solenoidal,
147, 155, 158, 159, 165,
175,
179, 184, 192,
272;
self-induction
of,
164,
183
Commutator, 272, 273
“Complex”
of
energy density, 9,
98-99,
100,
102-105,
117,
120, 414-415
Condenser,
272
Continuity equation,
105
Coordinate
system,
427-430,
445;
Cartesian,
429, 481, 482, 484, 485, 487, 507;
Gauss-
ian, 483-485,
488,
489-490,
491, 492.
See
also Frame of reference
Cosmology,
495-501, 516-517,
541-551.
See
also Universe
Covariance:
general,
7-17,
18n,
73, 74-75,
98,
109, 110, 117,
215, 245, 288-292,
294-295,
304, 316, 330, 341-343, 406,
407, 530, 550;
properties,
of
gravitational
field
equations,
7-17,
412-415;
with
respect to
linear
transformations,
7,
110-
114, 117, 118, 120, 124,
215-216, 222,
344, 413;
with
respect to
unimodular
transformations, 216, 218, 219, 220, 223,
228, 234, 235, 245, 304, 328
Crommelin,
Andrew
(1865-1939),
512,
537n
Crystal, 261n; magnetic moment
of
ferro-
magnetic, 151, 159, 180, 191;
mixed,
30,
37-38, 257;
and Nernst’s heat
theorem,
38,
250,
256-257
Curie-Langevin
law,
146, 152, 170n, 173,
189n, 191;
AE
on, 170n,
189n
Current:
Ampère’s
molecular:
see
Ampère’s
molecular
currents; closed, 145, 152-153,
173,
191; eddy,
148
(see
also Foucault
current);
electric:
107,
264;
electric
con-
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