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c. Inklination.
c. Inclination.
Det Doverske Inklinatorium havde tre Naale.
Aflæsningen af Naalespidsene sker ved Mikroskoper. Nonierne
angiver Minutter. Observationerne udførtes og beregnedes
efter Instruktionerne i Manual of Scientific Enquiry Side
103—105. Følgende Skema benyttedes:
Dover’s Dip-Circle had three needles. The ends of
the needles are observed with microscopes. The verniers
read minutes. The observations were taken and computed
in accordance with the instructions in "A Manual of
Scientific Enquiry." pp. 103—105. The printed form was as
follows:
Magnetic Dip.
Station Christiania. Date 2nd of October 1876.
Needle No. 1.
Setting of Azimuth Circle 64° 49’ + 64° 28’ = 64° 38’.
Remarks.....Magnetical Pillar in the Park of the Observatory.
Time 10A 55m a. m. to O7’ bm p. m.
Poles direct B dippin g Poles reversed A .ippin
Face of Instr. Readings of Needle Readings of Negdle
Lower end Upper end Mean Lower end Upper end Mean
’ 1 7i° 5-’5 710 6.’o 71° 5 7 71" 10’ 71° 12’ 71° I i.’o
u H !» 4- 5 4. 0 5- 5 4. 0 5 5 0 0 9 12 9 II 10. 5 10. 0
o Mean = a 7’ 5 2 Mean n b 71 10. 5
Z; 71 0 70 58 70 59 71 1 70 58 59- 5
■g 0 59 59 5 ■ 58
CO a? 0 71 0 60
—
Mean = a’ 70 59 5 Mean = b’ 70 59- 5
’o 71 1.7 71 14 71 15 5 71 21.5 71 20 ?! 20. 7
1 16 15 14 13 15 14 21 19 20 19 20. 0 19- 5
aa
^ Mean = a" 71 14 8 Mean zz &" 71 20. i
o o •r. 71 7 3 71 10 6 71 8 4 5 5 70 41 70 43- 41 43 70 42. 0 42. 0
5 8 6 5 40 43 4i- 5
Mean = a’" .71 6 5 Mean = V" 70 41.8
a" 71 14 8 b" 7 I 20 i
a’ 70 59 5 b’ 70 59- 5
a 7’ 5 2 b 71 10. 5
4 26 0 4 II. 9
Mean of Means = 7 ° 6 ’5 Mean of Means =± t 71° 2/97
Observer Carl Wille.
Do.
Do. =
t Dii
7’ 6-5
9- 47
71 4-74
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