'
476
'
_
'
INDEX
'
'
'
'
Brata and Powell, 162
-
Chadwick (Conf.)
.
‘
Braun electroscope, 292
.
—
and Rutherford, 308
'
'
Breakdown:
‘
-
.
—
. __
——
neutron discovery, 317
"
;
'
—
of air, 442, 446, 461
_.
Chaffee, 28
of high voltage tubes, 304, 447
Chamber, expansion:
.
-
.
de Broglie:
'
'
'
-—
Blackett cycle, 437
,
.
——
Wave-length of electrons, 49
——
design of, 434
.
'
’Brownian movements, 9
'
'
——
for X—rays, 433, 197
‘
'
-
.
—
exper.,
—
in magnetic eld, 319
..
'
Buckley gauge, 368
—
'
——
light source for, 438
‘
'
‘
Bursts, cosmic ray, 346
-
_
—operation of, 435
‘
'
Büsch:
'
'
.
.
-—
principle of, 433
_
.
'
—
e/m of electrons, 34
'
—
statistical uctuations, 251
'
Bushing:
Chamber, Faraday, 260
'
_
'
—
high voltage, 447”,
'
Chamber, ionization:
—
'
,
'
'
'
'
——
differential, 420
'
‘
..
-
'
"
.
and Davisson, 132 '
_
‘
—
for cosmic rays, 413, 352 ' ’
.' "
.
"
Calibration, current:
_
‘
=
"
—. for electrons, 420
-
.' . — of eleCtrometers, 402 '
'
-
—
for gammarays, 413
_
.
——
of eléctroscope,395
',
'—
for neutrons, 332, 3915
-
_'
"
Calibration, voltage: .
-—
for x-rays;»218,è—197,94‘10 .
,
*
g
'
——
of electr0meters, 400 ' " "
_
Î'
-
—shèrlldW, 286, 418
*_
.;
»
"
-——, exPer., 416
'
.
-
uctuaüons,Q—51;;
—'
_E.
'
;Çharactéristic curves:
.
'
<-“:…'»
Candle power: 74
——exper, 135
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