628 INDEX
Free
fall,
18-19
Frequencies,
547n;
of
electrostatic fields,
178n;
and
energy,
250, 497n,
546n; light, 253n;
proper (see Proper
frequency);
of
residual
rays,
xxiv
Fresnel's
drag
coefficient, 164,
428. See
also
Ether
Freundlich, Erwin (1885-1964):
correspon-
dence with
AE, 497n;
letters from
AE,
xxix–
xxx,
497n
Friction,
52-53; force
acting on
electrons,
505n
Friedländer, Jacob,
312n
Friedrich-Wilhelms-Universität, Berlin. See
Berlin,
University
of
Galilei, Galileo (1564-1642), 561. See
also
Transformations
Galileo's
principle,
425, 487
Galvanometer, 9, 359;
tangent,
359,
398n
Gamma
rays,
540
Gans, Richard (1880-1954), 518n
Gas, 6, 558;
constant,
272, 288, 306;
critical
point
of,
283;
ideal
(see
Ideal
gas); mon-
atomic, kinetic
energy
of, 181-182,
211-
212; monatomic,
specific
heat
of, 521;
in
narrow tubes,
192-195;
optical
properties
of, 513;
molecules,
xx, 37, 181, 214, 507n,
508, 543
(see
also
Rotation);
radiation inter-
acting
with, 507n,
522-524,
542; rarefied,
6,
243n;
theory,
272,
547n
(see
also
Boltz-
mann, Ludwig;
Kinetic
theory
of
gases).
See
also
Absorption; Thermodynamics
Gaus,
[577]
Gauss, Carl
F.
(1777-1855),
19, 126n, 359,
398n
Gauss's
error
law, 259,
265, 267, 294, 297,
303. See
also
Statistics
Gauss's
theorem, 6,
321-324,
326, 328, 331,
342-343, 348, 352,
387
General
relativity.
See
Relativity, general
theo-
ry
of
German
University, Prague
(Karl-Ferdinands
Universität).
See
Prague,
German
University
Gesellschaft Deutscher
Naturforscher und Är-
zte.
See
Society
of
German Scientists and
Physicians
Gibbs,
Josiah Willard (1839-1903),
7, 204,
244n,
554;
statistical
mechanics,
7-8,
315,
315n, 559,
562n
Gnehm,
Robert (1852-1926): letter
to AE,
xviii;
letter
to
Swiss Federal
Department
of
the
Interior,
3
Gravitation,
xxviii-xxx, 21,
25,
348, 446,
[582];
AE
and,
xv;
AE's
lectures
on, 10;
contemporary electromagnetic
theories
of,
126n;
influence
on
Brownian
motion,
223-
224, 245n, 450-451, 454n;
and
light
deflec-
tion,
486,
494-496; and
pendulums, 47-53;
and
propagation
of
light,
486-490,
497n;
propagation
at
velocity
of
light, 447;
and rel-
ativity theory,
497n;
See
also Center of
grav-
ity;
Potential;
Relativity, general theory
of
Gravitational
constant,
126n
Gravitational
fields, xxix,
490-491;
physical
nature of,
486-488;
potential energy
in,
348, 490;
and
propagation
of
light
in,
494-
496,
497n; static,
[583];
time
in,
491-
494
Gravitational red
shift,
xxix,
491-494, 497n.
See
also
Equivalence principle; Spectral
lines
Green's
theorem, 6,
331-332
Greil,
[576]
Grossmann,
Marcel (1878-1936),
[576];
letter
from
AE,
xvi
Grüneisen, Eduard (1877-1949), 412,
476n;
and
compressibility,
412, 414n, 471
Gruner,
Paul (1869-1957), letter from
AE,
xvi
Guillaume, Charles Edouard (1861-1938),
131, 155
Guldberg's rule,
407n
Gyroscopes,
114
Haber,
Fritz
(1868-1934),
[581]
Habicht,
Conrad (1876-1958): letters from
AE, xvi,
7
Hagenbach, August
(1871-1955),
547n;
letter
from
AE, 547n;
letter
to AE,
547n
Hale, George
Ellery
(1868-1938): letter from
AE, xxx
Hamilton,
William Rowan (1805-1865),
8,
128n,
550
Hamilton's
equations,
244n,
562n
Hamilton's
principle.
See Least
action,
princi-
ple
of
Hasenöhrl,
Fritz (1874-1917),
559-560
Hausmann, [576]
Heat, 120, 128n, 220, 366,
457,
460, 508,
535; atomic, 522, 544n; capacity,
533, 537;
conduction
(see
Heat
conduction); conver-
sion
of
energy into, 351; as cyclic process,
120, 129n;
exchange, 538; Joule,
399n;
ki-
netic
theory
of
(see
Kinetic
theory
of
heat);
oscillations
of
atoms, 527;
theorem
(Nernst's),
513,
513n