7.
REFERENCES
155
Radiàtz‘on Potential—Heat the tube to approximately 230° C.
Connect the switch (S) to contact (R). Observe the galvanometer
,
currents at one volt intervals,of V from 45 volts to zero.
Plot
—
galvanometer deections vertically and voltages horizontally. The
curve shouldlook like that in gujre 7—9. The difference in voltage
between the peaks is equal to V.. The correction voltages (con—
tact pd, etc.) are equal to the voltage of the lowest peak minus V..
_,
Compare [7
.
With the correct value of 4.86 volts (X = 2536524).
.
]0nizaz‘ian Potential—Heat the tube to approximately 110° C.
and connect switch (8) to contact ([) Pldt the galvanometer
deections from V = 15 volts to zero, taking readings more fre—
quently as the current approaches zero.
The voltage’ when the
‘
current just equals zero is the uncorrected value of V.. Correct
this value by subtracting the correction voltagemeas‘ured in the
V. experiment. Compare with the accepted value of 10.39 volts.
_
REFERENCES -
'
.
_
1. General Reference A, page
47.
_
,
2. K. K. Darr0w, Bell System Tech. leur., 9, 668 (1930).
,
3. E. Rutherford, Phil. Mag., 21, 669 (1911).
’
_
4. General Reference B, Chapter VIII.
.
a
‘
.
,
f
5. General Reference A, Chapter VI.
‘
_
6. K.T. Compton and F. L. Mohler, Bulletin National Research Council,
,
48, pages 3—9, 17—18, 42—47, 61—64(1924).
…
.
_
H. D. Smyth, Products and Processes of Ionizati0 bÿ Low Speed
El'eCti‘ons, Rev. Mod. Phys., 3,847 (1931). '
‘
‘
7.General Reference…‘A, Chapter II.—"
,
‘
'
"”
*
8. General Reference
IV
‘
.
;!
«
9. General
Î
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_
Meçhuen & Co. —
B—Rutherf0rdChadchkandEHlsRadmzamfmmRÆJZWW
_
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l—*Ï—HEWhelm‘f”0duwfwff0Æ0WSP6’0WNichaVVÏl1
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REFERENCES
155
Radiàtz‘on Potential—Heat the tube to approximately 230° C.
Connect the switch (S) to contact (R). Observe the galvanometer
,
currents at one volt intervals,of V from 45 volts to zero.
Plot
—
galvanometer deections vertically and voltages horizontally. The
curve shouldlook like that in gujre 7—9. The difference in voltage
between the peaks is equal to V.. The correction voltages (con—
tact pd, etc.) are equal to the voltage of the lowest peak minus V..
_,
Compare [7
.
With the correct value of 4.86 volts (X = 2536524).
.
]0nizaz‘ian Potential—Heat the tube to approximately 110° C.
and connect switch (8) to contact ([) Pldt the galvanometer
deections from V = 15 volts to zero, taking readings more fre—
quently as the current approaches zero.
The voltage’ when the
‘
current just equals zero is the uncorrected value of V.. Correct
this value by subtracting the correction voltagemeas‘ured in the
V. experiment. Compare with the accepted value of 10.39 volts.
_
REFERENCES -
'
.
_
1. General Reference A, page
47.
_
,
2. K. K. Darr0w, Bell System Tech. leur., 9, 668 (1930).
,
3. E. Rutherford, Phil. Mag., 21, 669 (1911).
’
_
4. General Reference B, Chapter VIII.
.
a
‘
.
,
f
5. General Reference A, Chapter VI.
‘
_
6. K.T. Compton and F. L. Mohler, Bulletin National Research Council,
,
48, pages 3—9, 17—18, 42—47, 61—64(1924).
…
.
_
H. D. Smyth, Products and Processes of Ionizati0 bÿ Low Speed
El'eCti‘ons, Rev. Mod. Phys., 3,847 (1931). '
‘
‘
7.General Reference…‘A, Chapter II.—"
,
‘
'
"”
*
8. General Reference
IV
‘
.
;!
«
9. General
Î
__fÊç-gg -
î
_
Meçhuen & Co. —
B—Rutherf0rdChadchkandEHlsRadmzamfmmRÆJZWW
_
i—î ——RFacherandSGouâsm1tÆ0mzcE6fgÿswMcGraw
,
l—*Ï—HEWhelm‘f”0duwfwff0Æ0WSP6’0WNichaVVÏl1
'