VEEDET’S CONSTANT IN ABSOLUTE UNITS. 
27 
Set 5 (B). 
Passages in + direction. 
li m s 
5 55 59 
5 56 50£ 
5 57 42 
5 58 34 
5 59 25-g- 
6 0 17i 
Mean . , 5 58 8*00 
In — direction. 
h m s 
5 56 24^ 
5 57 16^ 
5 58 8 
5 59 0 
5 59 51^ 
5 58 7-97 
Time of middle negative passage : — 
From + observations 
From — „ 
Mean 
h m s 
5 58 8-00 
5 58 7-97 
5 58 7-985 
Interval between mean negative passages A and B, 10 min. 57*510 sec. 
Number of passages .... 178 
Time 3*6938 sec. 
CONNECTIONS TO YIBEATION TIME. 
Temperature Correction. 
The Kew formula was used, and as the coefficients of the magnet had been determined 
at Kew for the Fahr. scale, that scale was used in the work. 
The square of the time of vibration varies inversely as the magnetic moment. Hence 
if the temperature of the magnet be greater than the standard temperature, the 
observed value of the vibration time will be too great, and its square must be divided 
by (l+^o), where q 0 is the correction given by the Kew formula. 
The temperatures at which the vibration observations were taken were : — 
At Kew. At Pixholme. 
No. Obs. 
Temp. E. 
No. Obs. 
Temp. E. 
K 1. . . 
. 51*4 
P 1. . 
. 57*0 
2. 
. 52*8 
2 
. 53*4 
3. 
. 52*7 
3. . 
. 52*7 
4. . . 
. 40*3 
4. . 
. 55*2 
5. . . 
. 42*4 
5. . 
. 56*5 
6. . . 
. 43*2 
e 2 
