700
INDEX
Christoffel,
Elwin Bruno
(1829-1900):
on
differential
covariants,
294,
296,
324, 328,
336,
342n, 495,
620
Christoffel
symbol,
234n, 256n, 329, 337
Clausius,
Rudolf
(1822-1888):
gas
theory
of,
526,
534n
Clock,
140, 150;
definition
of, 37, 131,
490,
541; gravitational clock,
142,
492;
influ-
ence
of
gravitation
on,
141, 142,
309-310,
341n,
480, 498,
509, 549;
light
clock,
141,
145n, 151, 492
Condenser, 152
Conductivity,
electrical,
19
Continuity equation,
99,
101,
246, 518;
elec-
trical, 54
Coordinate
system,
37
Coriolis force.
See
Force
Coulomb
law,
9, 152,
488, 585
Covariance,
general, 181,
185-186,
192,
193,
294-301, 308,
313,
319, 476, 483, 488,
493, 495, 573-575, 580, 589, 612; argu-
ments
against,
294, 297, 298, 300, 574,
580-581
(see
also Hole
argument)
Curie,
Marie
(1867-1934):
letter from
AE,
293n
Curie,
Pierre
(1859-1906): measurements
of
paramagnetic susceptibility
of
oxygen,
272,
284
Curie-Langevin law,
558-559
Curie
law,
284
Current: conduction,
87,
514; convection,
11,
81, 87, 320,
513;
displacement, 10, 102n;
Dällenbach,
Walter
(1892-1990):
notes
on
AE's
course, 6,
273, 298,
300
Debye,
Peter
(1884-1966),
552n, 553
Density:
of electrical
charge, 10, 54, 150;
of
energy
of static
gravitational field, 161,
162;
rest
of electrical
charge, 54, 82,
87,
320;
rest
of
matter,
101
Deutsche
Physikalische
Gesellschaft: AE's
lecture
on
periodic processes to,
607n
Dielectric,
17
Dielectric
constant,
17, 19, 21
Dielectric
displacement, 16,
514
Differential
calculus, absolute,
3, 192, 195,
296,
300,
319, 324-339, 342n, 476,
480-
481, 495-496, 573,
574,
589-596,
620.
See
also Differential covariants and Ten-
sor
calculus
Differential
covariants,
78-80.
See
also
Christoffel, Elwin; Levi-Civita, Tullio;
Ricci,
Gregorio;
and
Riemann,
Bernhard
Dipole,
mean
energy
of
rotating, 273
Dipole
moment,
electrical
of
diatomic mole-
cule,
276, 277
Discriminant of metric tensor,
311, 325, 481,
494
Dissociation
and recombination,
photochem-
ical molecular.
See
Photochemistry
Doppler
effect,
35, 51, 105n,
545
Double
star, 5,
35
Droste,
Johannes
(1886-1963), 344, 373n
Drude,
Paul
(1863-1906), 529
Duality
of
electricity
and magnetism, 25, 26
Dulong-Petit
rule, 533
Eclipse,
solar, 509, 550; in
1914,
295, 299,
300-301, 500, 586,
587n;
in
1919,
549
Ehrenfest,
Paul
(1880-1933),
5, 34, 112,
145n, 151,
299, 502n; correspondence
with
AE, 104n;
letter from
AE, 5, 104n,
113, 124, 127, 163n, 187n, 194, 197,
271,
273,
297,
301, 340n,
341n,
485n,
503n,
582n; letter
to
AE, 112, 194
Eichenwald's
experiment
on
magnetism, 17,
27
Einstein,
Albert
(1879-1955)
correspondence:
general
with
Abraham, Max,
125, 126;
from
Besso, Michele,
358;
to Besso,
Michele,
110,
111, 112, 124, 125,
127,
145n, 194,
294,
297-298,
301,
358,
564n, 570n, 621n;
to
Curie, Marie, 293n;
to
Einstein-Maric, Mileva, 501n;
general
with
Ehrenfest, Paul,
104n;
from
Ehrenfest, Paul,
112, 194; to
Ehrenfest,
Paul, 5,
104n,
113, 124,
127,
163n,
187n, 194, 197,
271,
273,
297,
301,
340n,
341n,
485n, 503n,
582n;
general
with Freundlich,
Erwin,
123,
295,
485n, 587n;
to
Freundlich,
Erwin, 197,
295, 298, 344, 443n,
502n, 510n, 510n,
577n;
from
Eucken, Arnold, 271;
from
Guye,
Charles-Eugene, 357, 393n,
395n,
361;
from
Haber, Fritz,
111,
112;