_
INDEX
489
Mass (Cent.)
_
Millikan, R. A. (Cent.)
»
-—of beta particle, 36
_
hot spark, 177
,
,
——
of deuteron, 232
——
photoelectric equation, 81
—
of electron,
20, 35
—
recording electroscope, 344
_
.
——
of isotopes, table, 470
Minimum ionizing potential; 145
-—
of neutron, 470
—
exper., 152
,
—
of proton,
back y leaf.
—table, 460
_
—-—
relativity equation, 37
Mirrors:
—
spectrographs,
226—231
.— metallizing of, 381—385
—
spectrum,
227
‘
Misch metal, 378
‘
—
stopping power,
270
Mobility, 161
' _
——
-unit, 38, back y leaf.
Modied x—ray line, 203
’
Materialization of electron pairs, 330
Molecular:
Maxwdl: 67
gauges,
367
’
—distribution law, 104
—
pumps,
356
_
-
..
—
electron velocities in a gas,
168
Momentum:
_
_
McLeod gauge,
364
'
.
——
in transmutations, 310
'
Mean-free-path, 138
_
——
of electrons, 28
_
“
.
Mean life, 246
Monochromatic x—rays; 214 (205, 218)
Mean range,
265
Morse, and Condom 267
_
.
Mean wave-length of X-rays, 214
Moseley: (141, 7 ?)
_
Measurements:
.
,
——
law, 210
.
_
'
—
list on page
ix.
Müller—Geiger, counter tubes; 422
Mercury:
'
Multiple reactions, 326
_
…
'
-—
cut—off, 375
'
Multiplier tube, 127
_
'
—
pumps,
357
-Mutual
conductance:;123
_
,
—to clean, 380
exper.,
136
_
,
,
.
,
——
vapor pressure of, 374
'
'
._
L'_
Metal:
‘
-
Æ
'
—
free electrons in, 103, 83
_'_“
Natural disintegrationz24Q—259 ,
.
‘
——
index for x-rays, 204
‘
”
‘
Ï
Natural groupé:
,
;
——
potential
barrier of,_56'
"
.
-—
of alpha particles, 462
,
——
refraction of electrons,55* ! ‘
Natural leak,
»
,
——
surface energy of, 56
“
N-e (Faraday c0nstant),
'
_
to glass, seals, 375
:
_Nædle gapvoltages
_
Metallic
_
table, 461
' *f
‘
Ï -'
7
,
.
Meter, counter—, 425
“
Negauveresrstance,126
'
“
_
Micron, 364
»
Ï
"
[ Nehef
:
-,
" "
Miller:
…
_:j
-î
'
’
—
XfraY indices»— 208
Ne°n’“°topes’227
Millieüès
Ne““‘“°276
.
-