494
'
INDEX
'
Radiation (Conf.)
Radioactivity (Conf.)
radioactive- (Conf.)
-—
natural, 240—259
——
summary, 283
—-—
spontaneous,
240—259
,
—
secondary, 278
—
trans-manie, 336
_
—
x-ray, 192
.
_
«
-—
units of, 241
Radio waves: short, 32
Radiometer, Crookes’, 20
_
Radioactive; '
Radium:
—
alpha particle, table, 462
——
active deposit, 249
-——
beta particle, table, 468
‘
’
—
emanation; exper., 258
——
constants, 245
.
—
series; 471, 242
‘
_
exper., 254
——
chart, 242
471
——
table, 471
.
'
‘
—
displacement laws, 252
—
standard, 241
equilibrium,
-
——
transformation of, 249
_
seèulai‘, 243
Radius:
,
“_:
_
—
stable, 243
—of
214
'
'.
_
——
transient, 249
.
—
of nucleus, 269, 336
.
'
_‘
;
————-—
exper., 254
‘
Radon:
_:
——uctuations, 250
'
‘
—
exper., 258
‘
,
‘-—half-life, 246
‘
—.—
—
‘
—
indicator, 322
Raman, 204 .
-
“
Ÿ‘, '
‘
25,2
-
Ramsauer efïect, 140
‘
“
—_—_ positron e'mitter, 322
Range;
,
'
.
.
'— fays‘; see alpha, beta, gamma.
—
-
——
curves, 264, 321
V
;
253
—
of alpha particles; 263 f *
'
‘
—
SérÏeS= 242
'
'
"
'
——-—-—
and decay rate, 267
'
.
‘Ï
'
ï.
.——
and ÿeloc1'ty, 267 '
.
'
“table, 253.
%
.
_
f
—— in jsOlids,-266
Ÿ
_radlum249—ofneutrons,3l8
—sodlm3Z8——groupsm
—ufanlum243—ofradon258
”'tfansf0rma0nsZ4347—0fwmn257
”“unüsZ4I—GfuramumX43
Radi°a°üVltY—mdecay
—u°tuaü°ns,250—0fthonum0254