1) Sansibar, 3. März 1865, Madel II.
J = —38*41',25 J nr-J7 = — 15',00!
J ' = —38 26,25 J = —7*46,25
J " = —30 55,0 J " - J ," -= + 8,75 I
J ' " = —31; 3,75 —7*22,50 1
i' . = —84*46',56 ; 2i' = 69*33',12
(zweiter Fall)
2
M m J
Da nun (s; S. 10) sin2i'sin2q = hcosH,
cos 21' sin 2p = hsinH,
= n = 3*41',25; lg tgn =8,80921
= m = 3°53',125; lg tg m = 8,83198
lg tg q ^ = lg |~ = 9 ,97723
q = 43*29'55"
lgtgp=lg(tgn tgm) = 7,64119
p =0*15'3'
sin.P = - n 2phsm 2q, and die wahre In k lin a tio n i —1| J | — I , so ergibt die
Rechnung:
lg cos 2i' = 9,54327
lg sin 2p 7,94229
lg (hsinH) = . 7,48556
lg(hcosH) = 9,97114 n
lg tg H = 7,51442 n
H = 11'14"
i' = _ 34° 46',56
+ | F = (?) — 16',06
% H = ( ? ') + 5',62
lg sin 2i' = 9,97174 n
lg sin 2q = 9,99940
lg sin 2p = 7,94229
lg sin 2<f=-9,99940 :
lg(hcosH)= 9,97114 n " SummeJ= 7,94169' v
öder auch = lgh, da lg h = 9,97114 n
lg cos H nahezu = 1 ist. Man hat
mithin hier, weil h = sin2i' sin2q, — *" 7>&7^ 5 n
einfacher: F = — 82'7"
s in F = s*n 2P ainlq sin 2p oder:
sin 2i' sin 2q ~ sin 2i '' lg sin 2p = 7,94229
lgsin2i'=9,97174 n
■ i =i=B. f r 34®57',00 (?) = wahre In k lin a tio n .
.2) Jumbo, 12. Aug. 1865, Nadel II.
lg sin F = 7,97055 n
J = —24® 1',25 j -5f«<kS=_oo2V',25’ J —i '= —ll',56==a 1
J ' = —23 40,0 J —J " - = — 0 6,25 J ' —i '= + 9,69 = b fl
J " = —23 55,0 J "—J ' " = _ 0 12,5 J " —i '= — 5,31 = c
J ' " = —23 42,5 J ' —J ' " = + 0 2,5 J ' " — i'— h 7,19 = d !
wie oben.
a d = - -83',12;
e—d = — 12,50
i'==—28®49',69 (erster Fall)
Korrektion A i =
Ai= =+ 3,62
ad—bc
(a—b)—(c—d)
—83,12+51,46 —31,66
-2 1 ,2 5 + 1 2 ,50= ^ 8 j 5 ‘ =+3',621
1 = —83*46',07 = w a h r e I n k lin a tio n .
:A. Beobachtung von Q. Kersten,
Sansibar, 24. Febr. 1865, Mittag 1 Uhr; Nadel I.
K re is Ost Kreis West
Xvorn 35*17',5
X hinten 35 49,0
X hinten 35® 37', 5
Xvorn 36 2,5
Nadel umgestrichen
X vom 33*22',5
X hinten 34 7,5
X hinten 34« 55',5
Xvorn 35 29,5
4 F -
J = —35* 27',5 I—J ' = + 28',25
J' = —85 55,75 J—J" = —1*18,5
J" = —34» 9',0' J " - J ' " = + 39^5
J'"<r=—34 48,5 J '—J '" = —l.o 7,25
i ' = —ggo 5/>19 (zweiter Fall)
■ i H < 1 '
B. Beobachtungen tou v. 1. Docken, v. Schickh, Dr. Linck und Deppe.
Sansibar, 25. Febr. 1865, Vorm. 10 Uhr;-Nadel I.
Kreis Ost b Kreis West
Xvorn 3 5 ® 3 ', 0 X hinten35® 7',5
Xhinten35 5,5 | x v o rn 35 7,5
Nadel umgestriohen
Xvorn 34®50',0--13Xhinten35® 7',5
X hinten 34 52,5 1 x vom 34 52,5
J ; = - r,35*5',25 6*
J ' = —35 6,50
J" = —34® 58',75
J " '= —34 52,50
J—J' |— h l',25
J—J" = — 6,50
J " .+ p " = — 6',25
J' —J '" = —14,00
i '= —35® 0',75
jr F — | H < 1'
3. März 1865, Mittag 12 Uhr; Nadel I.
(zweiter Fall)
Kre is Ost K re is West
Xvorn 34®55',0 1 x h in te n 35® 17',5 1 J = — 85® 6',25 i;I+ J ':^ 4 # + l',25
X hinten35 10,0 | x v o rn 35 5,0. J ' = —35 7,5 ■J— = —40,00
Nadel umgestrichen
Xvorn 34®22',5 I x h in te n 34®30',0 J" = —34« 26',25 j / / _ " z^ + 2 1 ',2 5
Xhinten34 45,0- 1 x v o rn 34‘50,0 1 J"'=---- '34 47,5 J<_*« = _ 20,00
; i '= l _ 84* 51',88 1
4 F - i H < 1'
3. März 1865, Mittag 12 Uhr; Nadel II.
(zweiter Fall)
Kre is Ost Kreis West
Xvorn 38*22',5 I xh in ten 39® 0',0 J = —38» 41',25 [l J —J ' = T 7 ,^ , 15', 0
X hinten38 0,0 1 X vom 38 52,5 J' = —38 26,25 J 7*46,25
Nadel umgestrichen
X vorn 30« 22',5 j x hinten 31* 27',5 J" = —30»55',0 J<'—J" ' = + 8', 75
X hinten 3Ö 22,5 | x v o rn ‘3145,0 J ' " = — 31 3,75 J '—$»"ij.;A.7®22',5
i ' = —34*46',56 (zweiter Fall)
1 F = — 16',06) «. , „ . . , ,
*H = £ 5 ',6 2 |? «.oben Beispiel 1.
6. März 1865, Vorm. 9 + Uhr; Nadel I.
Kre is West
Xvorn 34® 0',0
Kreis Ost
I x hinten 33® 27',5 1 J' — 33« 43',75 I J — J ' = + 0®12',5
X hinten 34 17,5 Xvorn 32 45,0 J = —33 31,25. 1; J —J" = '+ 0 52,5
Nadel umgestriohen
Xvorn 34® 15',0 I x h in te n 33®30',0 J '" = — 33» 52',50 J"—J'" = + 0*31',25
X hinten 34 22,5 i[ x v o rn 34 25,0 J " = — 34 23,75 J '—J" ' = + 0 8,75
^ F — 1 H < Ï ' + ! '= ■ —83® öS',81 1(zweiter Fall?)
8. März 1865, Vorm. 10 Uhr; Nadel I.
Kreis West
Xvorn 35® 0',0
Kre is Ost
i x hinten 35® 2',5 1 J ' = _ 35® 1',25 J —J' = + 0® 1 7 ',5
X hinten 34 25,0 X vorz 35 2,5 J = —34 43,75 J —J" = + l 28,75
Nadel umgestrichen
Xvorn 37°50',0 I Xhinten35® 15',0 ) ' " = —36®32',5 \ J"—J '" = + 0«20',0
Xhinten37 15,0 Xvorn 35 10,0 | J " = _ 3 6 12,5 J ' _ J ' " = + l 31,25
* F - - { ( H < 1 ' i' = — 85« 87',50 (zweiter Fall)
Mittel der Beobachtungen vom 6.—8. März i' = 84® 45',16