622
INDEX
Bauer, [576]
Berlin,
University
of
(Friedrich-Wilhelms-
Universität), 4;
AE's
lectures
at, 4,
7,
599-
600
Bern,
Canton of:
Department
of
Education,
let-
ter
from
AE,
xvi
Bern,
University
of,
xvi, 3,
598
Besso,
Michele
(1873-1955):
correspondence
with
AE, 504n;
letters from
AE, xvii, xix,
xxi,
xxv,
xxviii,
3,
246n,
476n,
504n, 515n,
546n-547n, 562n;
letter
to AE,
421n
Beta
rays.
See Cathode
rays;
Electrons
Black-body
radiation,
xx,
423n, 457, 506n,
545n,
562n;
energy density
of, 178n,
451-
452, 455n,
539, 562n;
energy
fluctuations
of, 451-454,
454n;
fluctuations
of, xix, 177,
178n,
453,
533-539,
546n,
556;
Planck's
formula
for,
284, 413,
457, 506n,
524,
530-
531, 534,
537,
543,
545n, 560;
Rayleigh-
Jeans
law, 270,
279-280, 281n, 545n;
and
specific
heat,
521-530;
theory
of, xxiii,
522.
See
also
Jeans, James
Hopwood;
Planck,
Max;
Rayleigh,
John William Strutt
Bloch,
Werner,
7,
600
Bodies,
67,
106-107.
See
also Mass
point;
Motion;
Rigid
bodies;
Solid bodies
Boltzmann,
Ludwig
(1844-1906),
xxii-xxiii,
7, 180,
289, 506, 506n, 532, 550;
Gas-
theorie
7-8
Boltzmann's
constant, 253n,
413, 414n,
450-
454, 454n-455n, 524, 557
Boltzmann equation, 506,
551-556
Boltzmann
principle,
xxvi-xxvii,
250,
285,
287-290,
310,
311n,
506,
532-533,
535,
537-538, 556-558,
562n;
AE's
lectures
on
statistical mechanics and,
599; and
ergodic
hypothesis,
287;
and fluctuations,
xxviii,
285,
297, 535;
and
irreversibility,
xxvii, 289,
550-552; and
quanta,
xxvii. See
also
Entro-
py; Probability
Born,
Max (1882-1970), 449n, 475n,
478-
479
Brachistochrone,
53
Bredig, Georg
(1868-1944), 406,
407n
Brillouin, Marcel Louis (1854-1948), xxvii,
508
Broglie,
Maurice de (1875-1960), 519n
Brownian
motion,
7, 246n,
283-284, 508n,
509, 550;
AE's
and
Smoluchowski's
work
on,
245n-246n,
268n,
284, 311n,
423n;
and
fluctuations, xviii,
450-451,
[575];
under in-
fluence
of
gravity,
223-224,
245n,
450-
451,
454n;
of
a mirror, 454;
of
rotating par-
ticles, 224,
227-228, 245n-246n
Brussels,
xxvii,
544n.
See
also
Solvay
Congress
Bucherer,
Alfred H.
(1863-1927),
letter to
AE,
176n
Bucherer's
experiment, 173,
176n
Canal
rays, 162, 175n,
432,
439n
Capacity,
330-331,
337-338,
379-384;
and
circuits,
380;
and resistance, 367-368; unit
of, 379-380
Capillarity,
194,
406n, 414n,
[567];
constant,
404; and electromotive force,
[574]
Capillary
forces,
508
Catenary,
125n
Cathode
rays, 173, 249,
437, 457, 540-541,
543.
See also Electrons
Cavendish's
experiment,
126n
Center of
gravity,
36-37, 63-64,
69,
439n;
definition
of, 36, 64;
law
of, 63;
of
systems,
78
Central limit
theorem,
268n
Charges, electric.
See Electric
charge
Chavan,
Lucien (1868-1942),
[576];
letters
from AE, xvii,
3
Chemical transformations, 511n
Circuits. See Electric circuits
Clausius-Mosotti-Lorentz relation, 306
Clement, Nicolas
(1778-1841),
[567]
Clocks,
11,
147-148,
156, 175n,
431-433,
479,
484n; paradox,
436, 439n,
444; at
rest,
152;
retardation
of,
in
gravitational
field,
491-494;
synchronization
of,
149-151,
156,
161-162, 444-445; and time transforma-
tion,
161-162
Coherence,
540,
[574]
Cohesion, electrical
origin
of,
413n
Cohn, Emil (1854-1944),
electrodynamics
of,
445, 449n
Coincidence,
426,
483
Collisions,
37, 515n,
542-543;
of
electrons,
516, 543; elementary,
542-543;
molecular,
184-185,
507n;
times,
515n,
516-517
Complex
numbers,
51
Complex quantities, 373,
399n
Complexions (Komplexionen),
288,
311n,
506,
506n. See
also
Boltzmann, Ludwig
Compressibility,
xviii-xxiv, 412, 469, 476n,
527;
of
atoms, 526; coefficient, 411, 468;
cubic,
462; isothermal,
311n;
of
metals,
471
Condensers,
386, 397n;
plate,
336,
338,
346;
system
of
two, 397n;
and
tension,
382
Conductivity:
coefficient
of
thermal,
472;
elec-
trical,
504n; experiments
on,
504n;
of
pure