3 6 4 I N D E X
Holder, Roland, 118
Holländer, ?, 285
Holst, Helge (1871–1944): 206; on relativity,
212
Hopf, Ludwig (1884–1939): 6; expresses sympa-
thy for AE, 255–256
Huber, Frieda (1880–?), offers to accompany
Pauline to Berlin, 143
Huguenin, Gustav (1840–1920), 28, 34, 98
Hungarian Soviet Republic, people’s commis-
sars on trial, pardon for, 307
Hurwitz family, AE on separation from Mileva
Einstein-Maric;, 62, 63
Hurwitz, Adolf (1859–1919), 125, 127
Hurwitz, Eva (1896–1942), 127, 129
Hurwitz, Ida, 98
Hurwitz, Lisbeth, 129
Hurwitz, Otto, 129
Hurwitz, Siegmund (1904–1994), 63
Hydrodynamics, 176
Inertia, law of, and causality, 186
Influenza, in Switzerland, 104, 112, 116
Institut international de physique Solvay, 188
International Congress on Mathematics, Stras-
bourg, 189
Ioffe, Abram (1880–1960), 255, 329
IR spectra of molecular gases, Hettner on, 185
Irreversibility, Born on, 328–329
Isomery, of mixed crystals, 317
Jaurès, Jean (1859–1914), 258
Jeans, James (1877–1946): 238; invited to
Solvay meeting, 189
Jeffery, George (1891–1957), 330
Jewish Community of Berlin, requests congrega-
tional tax from AE, AE declines, 338, second
request, 347
Joffe, Abram. See Ioffe, Abram
Julius, Louise (1901–1982), 140, 163
Julius, Maria (1894–1977), 140, 163
Julius, Willem (1860–1925): 140, 149, 152, 163,
203, 269, 294, 329; against gravitational red-
shift, 192–193, 193; approached by Weyland
for anti-relativity lecture, 256; on evidence
regarding gravitational redshift, 153–156; on
his family health, 257; thanks AE for portrait,
193
Julius-Einthoven, Betsy (1867–1945), 269
Jupiter, satellites of, 329
Kaiser-Wilhelm-Institut für Physik (KWIP):
meeting on establishment of, 66; promised to
AE, 41
Kamerling Onnes, Catharina (1861–1936), 294
Kamerlingh Onnes, Harm (1893–1985), 168, 329
Kamerlingh Onnes, Heike (1853–1926): 185,
194, 230, 244, 276, 294, 296, 297, 329; visit-
ed by AE, 139; arranges for a meeting on
magnetism, 214, 255; as mediator between
Trowbridge and AE, 313–314; expedites
AE’s appointment at University of Leyden,
174, 227; helps Russian physicists, 269; in-
tervenes for AE’s visa, 149; lectures on liqui-
faction of helium, 156; on Hall effect, 314; on
meeting on magnetism, AE on, 222
Kamerlingh Onnes, Menso (1860–1925): 168,
329; AE rooms at home of, 296; and Harm,
good memories of AE with, 329
Kant Immanuel (1724–1804): and Newton, 182;
Reichenbach on, 195, 287
Kant-Society: and Annalen der Philosophie,
206; meeting of, 161, 206
Kapp Putsch, consequences at University of
Rostock, 159
Kappeler, Johann (1816–1888), 50
Karl I (1887–1922), 44
Karlsruhe, AE invited to lecture in, 6
Kármán, Theodor von (1881–1963), 309
Karr, Albert (1869–1927), 124, 125, 142
Kayser, Emma (1860–1930), 75
Kayser, Sigmund (1850–1936), 75
Keesom, Willem H. (1876–1937), AE on, 16
Kelen, József (1892–1939?): 299, 306, 309;
character of, 311
Kelen-Fried, Jolán (1891–1979): 306; on
Kelen’s character, 311; publishes AE’s state-
ment on Kelen, 310; requests AE’s appeal to
amnesty for Kelen, 310
Kepler’s laws, 186
Kerkhof, Karl (1877–1945), 169
Kiel Autumn Week for Arts and Sciences: 275;
AE on, 273; AE’s honorarium for lecturing
on, 347
Klein, Felix (1849–1925), 328
Klein, Franz (1854–1926), 33
Kleiner, Alfred (1849–1916), 13, 15, 20, 25
Knopf, Rudolf (1874–1920), 162
Koch, Alfred, contributes to Pauline’s treatment,
133
Koch, Jacob (1850–1921): 59, 66, 67, 68, 124,