.ACT 34. IN GUNNERY. 373
The value of i, or the mean among the distances of thepoint struck this day and the last is 88.
Of the plugs, this day and the last,
10 inches weighed 9
8 oz
16 oz
Mean length of the charge -
6-0
11-1
Mean recoil with ball - -
28-2
41-7
Ditto without -----
13-77 '
27-75
Difference, or c = - - -
14-43
13-95
Hence velocity by the recoil
1594
1542
Mean ditto by the pendulum
1803
1966
Difference, the recoil less
209
424
Or nearly the part - - -
, 1
9
f
60. Monday, September 8, 1783 ; from 10 till 14 p. m,Weather windy and cloudy, with some drops of rain.Barometer 30-03 ; and Thermometer 61° at 10 &. m.
Pow-
Ball’s
Vibration of
Point
V)
bp
Value of
V°loc
der
diam
gun
penrl
struck
E
p
< S
n
ball
oz
oz dr
inches
inches
inches
inches
in
lb
inches
1
2
2-7
2
2
2-55
3
2
2-6
4
4
6-55
5
4
6-1
6
4
6-8
7
4
16 13
1-96
17-4
17-8
88-1
10 663-0
77-35
40-20
1281
8
4
16 13,
1-96
18-3
19-0
88-3
9{664-7
77-37
40-19
1369
9
4
16 13
1-96
18-2
18-8
88-0
8:666-3
77-40
40-19
1363
10
4
16 13
1-96
17-9
18-0
87-2
9
667-8
77-42
40-19
1321
11
2
16 13
1-96
10-9
12-4
87-8
8
669-4
77-44
40-19
906
12
2
16 13
1-96
11-2
12-5
8 5-8
7
670-9
77-47
40-19
937
13
2
16 13
1-96
11-0 |
12’5
86-1
7
672-4
77-49
40-19
936