352
NEW EXPERIMENTS
TRACT 34.
But these corrections will have contrary signs when b isnegative, as well as the second term in each of the denomi-nators.
45. Monday , June 30, 1783 ; from 9 \ A. M. to 2| P, M,
The.air clear, dry, and hot.
Barometer 30’34, and Thermometer 74.
We began this day, for the first time, to fire with ballsagainst the pendulum block. The powder of the six barrelsbefore-mentioned, had been all well mixed together for theuse of the experiments, that they might be as uniform aspossible, in that, as well as in other respects.
The Gun was n° 1, with the leaden weights.
Its weight and the distance of its centre of gravity, wereas before-mentioned ; the distance of the tape it was for-gotten this day to measure, but from circumstances judgedto be 106y.
Pendulum. Its weight - - - 559 = p }
Distance to the tape 115‘1 = r.
N°
Pow-
der.
Ball’s
Vibiation of
Struck
below
axis
| Plugs
Values of
Vdoe.of theball
wt
diam
gut
pend
p
S
n
oz
oz dr
inches
inches
inches
iuches
in
lb
inches
fe et
1
2
2
2
2
2
3
8
11-2
4
16
23-4
5
16
16 13
1-95
34'
23
87-9
559-0
75-30
40-30
1392
6
16
16 13
1'95
35-4
25
86-8
560-1
75-32
40-30
1534
7
16
16 13
1-95
34-8
23-7
88-8
561-1
75-35
40-29
1426
8
16
16 13
195
35-1
25
87-6
15
562-2
75-37
40-29
1530
9
16
16 13
1-95
35-7
23-7
88-2
10
564-6
75-39
40-28
1445
10
16
16 13
1-95
35-2
23-1
88-3
566-5
75-42
40-28
1412
medium
35-0
medium
1456
The first 4 rounds were with powder only; the other6 with balls, all of the same size and weight.