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Observations of Deflection, 2nd of October 1876.
Station Christiania; Lat. 59° 54’ 43", Long. 10° 43’ 37".
Mean Time at Station; commencing O’’ 36™ p. m.. ending V’ 20m p. m.
Magnet (A) deflecting; (B) suspended.
Deflecting Magnet Readings Mean Corrected Means
Distance N. End. Temp. of Verniers of Verniers Circle Reading and Differences
East 1
i Foot E. I 53-"4 143 17’ ’7 40" 20 143 17’ 30" 143° 143 17’ 30" 9 50 1430 13’ 40" go 23 40
i „ W. 53- 4 90 21 21 0 20 go 21 10 90 21 10 52 50 O Diff.
1.3 E. 1 53- 3 128 13 13 20 20 128 13 20 26 10 26 25 0 ua
1-3 » w. . 53- 2 105 7 8 40 0 105 7 50
West
i Foot W. I 53-°4 go 26’ 26 0" 20 90 26’ 10" 128’ 13’ 20" 22 IO 128° 17’ 45" 105 10 25
i „ E. I 53- 4 ■43 9 10 40 0 143 9 50 105 7 50 23 7 20 Diff.
1-3 » W. 53- 0 105 13 0 105 13 0 13 0 i’ 33 40 U’ „
1 / 13 0
1-3 n ’ E’ 53- 0 128 22 22 0 20 128 22 10
53° 26 r —i d’- 26° 2 ’ o’
Mean t, = ~ 8 Observed Angles of Deflection («,„) 1 0 — 2 2 5 0
" ’r.= 1.3 = it 33 40
m„ . . m’ )».„ I 2u j.l m m’ I P\
X = i ’ Sln X’ =x; i ’ + r? + ® - r X ( 1 - r.’J-
r =1.0 r’ — 1.3 r’= 1.3
£ r’Log. = 9.69888 0.04070
i-)—1.00039 1-00086 Sin.tt0Log.iz g.64826 9.30193
m
+ (’•> — 0 0.00244 0.00244 ~ Log. = g.34714 g.34263
1+ (tn — I)’l — 1.00283 i 00330 Log. = 0.00123 0.00143
m’ r
Log. = g.34837 g.34406
i –-«.0.97618 Log. = 998953 9.99384
™ Log. = 9.33790 9-33790
TnX Log. = 0.41767
mX — ^ = X- Log. = i 07977
3.4664 = X = Log. = 0.53988
Q-7547 =1» = Log. = 9.87 779
Observer Carl Wille. Red. to Metr. Un. Log. = 9.66378
1.5983 = X = Log. = 0.20366
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