- Project Runeberg -  Den Norske Nordhavs-expedition 1876-1878 / The Norwegian North-Atlantic Expedition 1876-1878 / 2. Bind /
26

(1880-1901) [MARC]
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Indførte i Formelen: Correction r N -f- «t -f ^ li
give disse Observationer følgende Ligninger til at bestemme
N, « og (i:

N’". X + t « + h ,1

1 N -f- 13.8 ce —j— o

2 X + 9.7 « + o ;>

3 N + 11.3 a + o

4 X + ii.7 rf -f o ;!

5 X -f 10.9 a + o
o X + q.8 a + o

7 X —|— 11.2 (c —{— o ,

8 X — 0.3 « + 396 fl

9 X — 0.6 « -f- 401 -i

10 X — 1.2 a + 417

11 N + 11.6 « + it .1

12 N -f- 9.1 « + 31 J

13 X + 9.0 re + 46 (i

14 x — 0.8 «4-515 f

15 X — 1.15 « + 1861

16 X — 1.25 « +1539,’

17 — 1-35 " "f 601 ti

Introduced into the formula:

Correction = N + «t -f ,1 h,
these observations give the following equations for
dcterm-inine X. a. and >1:

— Obs. Con-. Bor. Coir. 0 —H.

(Oomp.)

— -f- 0".07 J o".oo + o".o7
= — o .03 + o .05 — 8
= — o .03 + o .03 — 6

— o .03 + 0 -°3 — 6

= -f o .07 i -f o .04 i -f- 3

= 4- o .07 + o .05 4- 2

= 4- o .07 -f o .03 -i- 4

= 4- o .03 + o .12 — 9

= + o .13 + O .13 o

= + O .24 I 4- O .14 4" 10

= +0 .20 I 4- o .03 -f 17

o .00 4" 0 — 6

=± — o .05 i 4" 0 — 11

= + o .38 + o .12 -I- 26

= — O .02 I — o .02 o

— — o .04 o .01 5
= + o .15 +0.12 + 3

Ved de mindste Kvadraters Methode findes

X — 4" O"-!?1; a — — O.OT2IÖ. {i = — O.OOOI I345,

og altsaa Correction for Xo. V =

4- o". 171 — 0.01216 t — o.000113 h.

De efter denne Formel beregnede Correctioner ore
opførte under Rubrikken Ber. Corr. og Forskjellerne mellem
de observerede og beregnede Correct ioner i Rubrikken O—B.
Af den sidste faaes MF = 4 o".o72.

Som man ser, ere de enkelte Correctionsled af samme
Orden som ved de øvrige Miller-Casella-Thermometre. De
tre Sammenligninger med Xo. Vtt ere noget usikkre, da
dette Thermometer (se nedenfor) i 1870 viste paafaldende
Forandringer i Skalacorrectionen til forskjellige Tider. Til
ovenstaaende Beregning har jeg for Xo. VII benyttet de
Skalacorrectioner, der ere udledede af den Dagen før
gjorte Sammenligning med Normalthermometret i
Forbindelse med den til Xo. VII svarende Værdi af
Coeffi-cienten a.

By the method of the least squares we find
X = 4" o"-1?1? ce — — 0.01216, = — 0.00011345;
and hence the correction for No. V =

4- o". 171 — 0.01216 t — 0.000113 h.

The corrections computed according to this formula
are given in the Column Corr. Comp., and the
differences between the observed and computed corrections
in Column O— B. From the latter we get MF = 4 o".o72.

As will be seen, the several terms of correction
are of the same order as for the other Miller-Casella
thermometers. The three comparisons with No. VII are
somewhat untrustworthy, that instrument (see below)
having shown in 187(5 striking changes in the scale-correction
at various times. When making the above computation
for No. VII, I used the scale-corrections found the day
before from the comparison with the
Standard-Thermometer, together with the value of the coefficient «
corresponding to No. VII.

Miller-Casella No. VI.

N u 11) u 11 k t - C o r r e c t i o n.

1877. duli 10. 4" 09 Tromsø.

1878. duli 23. + 0 • ’3 Ved Beeren Eiland.
„ Nov. 29. 4~ 0 • ’4 Christiania.

Middel 4~ o". 120 MF = + 0".020.

Miller-Casella No. VI.

Zero-Correction.

1877. »July 10. 4" °9 Tromsø.

1878. July 23. +0.13 off Beeren Eiland.
., Nov. 29. 4-0.14 Christiania.

Mean o". 120 MF 4 o".o2o.

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