INDEX
481
._
Electrometers (Conf.)
Electron (Cent.)
'
"'
ber, 407
——
charge“-to-mass of (Com.)
’
‘
‘
.
_
bers for, 385, 384
——
spectroscopie methods, 35
-
‘
'
——
Hoffmann,
405
——
Thomson method, 21
—
K_elvrn,
404
'
_—
exper. (46)
‘
.
—L1ndemann, 406
'— value, 28—30, 35, back y leaf.
.
—
measurement of;
——
velocity lter method, 36
‘
——
current, 398
——
coupling, 129
_
-
.
.
—-——
exper.,
179
——
dualistic nature, 59 -
,
‘
—
quantity, 404
—
gun, 133 '
,.
.
‘
——
voltage, 397, 400
——
ionization by;
..
_—
exper.,
416
.
-—
in expansion chamber, 439
-
‘
—
principle, 396
—
table, 468
—
sensitiveness, 401
——
mass of, 20;
-
'
——
study of, 415
.
——
energy équivalent, 38
-—
theory, 400—404
'
-_—-—
in mass units, 231
'
-—
tubes, 124
_
_
relativity equation, 37
-
-—-—
circuits for, 408
_
——
vs. H ion, 36
—
types, 404
-'—-———
value, 35, back y leaf
'
'_
‘
Electron: (see Electrons).
-—
miscroscope,
133
_
-,
—
atomic weight of, 231
-———
multiplier tube, 127
'
——
charge of;
.
-—
optics, 129
‘
——
by Brownian movement, 10
——
original meaning, 1
'
,
,
——-—by oil-drop method, 2
_
Ph0tO-;
‘
'__
exper.,
14
-
——
charge-to—mass,
25
'
‘
—-——
by shot effect, 100, 7
——
number emitted, 69
‘
'
"
,
'
-———
by thermionic method, 100, 7
'
———see photo-electrons.
-
.
‘
‘
_
.
-———by x—ray method, 12
——_ recoil, 203
‘
-
————
comparison of methods, 6
,
"
sheath, 153
_
‘
‘
.
'—-—-‘early
'
"
'
‘, "" telescope,_l33
‘
‘
‘
‘
‘
——
value, 6, 13; back ylea
"
——
velocity of;
‘
'
—‘
‘
'
'
‘
‘
\
—
charge-to-mass of; ,
—'——-—, distribution inigaSes,
,
——
alternative
———‘electron V01t> 28
“
..
‘
.
-———
basic equations,
29
,
“_
j
"
‘ -
‘
?"
'———— Busch meth0d, 34 ‘,
'
"_“—
'
:
'
Ï
'
1 _—
———Duhningt‘°n mthd29
.—=— ………28
"
‘
"
"
,
‘ -
——‘ helîca‘1 mèthb“d;3î
-———tblf=467
':
‘?
“
:
——magnetronmcthod@tabIE462464
.'
‘
“
-———Shaw,29tabk"466
—
.-