TRACT 34. IN GUNNERY. 23
The ball’s diameter 1-96, and weight alternately 16 oz10 dr and 16 oz 14 dr.
The Gun n° 1, without the leads, weighed 3841b.
The Pendulum the same as left hanging since the last day.This day was a continuation of the experiments with thelight gun, again to try if the'velocity was altered. Butwithout effect. The means as below :
Powder’s Weight
2 oz
4oz
6 oz
8 oz
- - - height
1-73
2’94
402
5-42
Recoil of gun
273
454
604
742
Velocity of ball 7 59
1086
1325
1472
The mean weight of the balls is 16 oz 12 dr.
The mean value of i, for the point struck, was 89 - 3.
83. Tuesday, Octobers, 1784; from 11 till 2.The weather fine and warm.
N°
Vibration of
Point
03
Values of
V eloc.ofball
gun
pend
struck
&£
Cm
p
g
n
1
48
inches
inc
lb
inches
feet
2
206
152
89-0
5
721-9
77-35
40-23
1404
3
213
158
87-6
5
723-0
77-37
40-23
1463
4
208
163
91-8
7
724-1
77-39
40-23
1443
5
I
2.
158
91-0
6
725-2
77-41
40-22
1414
6
I
4
152
90-7
6
726-4
77-43
40-22
1367
7
T
153
91-3
6
727-5
77-45
40'22
mean
1374
1411
The first charge of powder was 4 oz, all the rest 8 oz.The diameter of the balls was 1*96, the first weighed 16 oz10 dr, all the rest 16 oz 14 dr.
The Gun was n° 1, with 6S7 lb of lead fixed to it, namely,433ilb about the trunnions, and 253 |lb lashed upon the upperside of the gun, close to, and before and behind the stem:these, with 384 lb for the gun and iron together, make inall 1071 lb.