650] [Results of Art. 649.] By Mar. 13. [Art. 553.]

Double plate circ. 18+ 11 sq. inc., or 12 inc. el.

Circ. 36

=

2 doub. +2.67 inc. el. without allowance for com

Plate air 1 = circ. 36 – 3·03 = circ. 181 × 2+ 67.

652] *If charge circle is greater than it would be if placed at a

great distance from any other body in ratio of a: a - 36,

charge circ. of 18 should exceed in ratio of a : a - 18 and so on.

Therefore, if we suppose a = 167,

(36

9.3

(9.89

charge circ. 18 should exceed its true charge by 2:31,

[See Art. 338, and Note 24.]

•55

and charge circ. 36 should exceed

20 charge of 18 by 4.27

4 times charge of 9.3 by 6:49'

which is

(.90 greater

06 less

than by experiment, and charge circ. 18 should exceed 2" charge of 9.3 by 111, which is 58 less than by experiment.

We will therefore suppose that the charge of circ. 18 or of globe 12.1, as found by experiment, exceeds the true charge in the ratio of 9 to 8, as it should do if a = 167.

1773. P. 85 [Arts. 553 & 650]. Each doub. plate contains 16 circ. inc. more than circ. 181.

1.25
4

654] P. 15. 1771 [Art. 456]. Globe cont. sq. inc. or 35 circ. inc. more than circ. 18.5.

P. 12. 1772 [Art 478]. Globe contains same as circ.

DEF. The charge of globe 1 inc. diam. placed at great dist. from any other body is called 1 glob. inc.

The circ. 18.5= 13.5 glob. inc.*

The doub. plate A or B is supp. = 13.6 glob. inc.

655] P. 18, 1772 [Art. 483],

D, E, F & G cont. 68 inc. el. less than 2 doub.

D is supposed to cont. 13 circ. inc. or 85 glob. inc. less than 2 doub., id est, 26-3 glob. inc.

656] 1773, P. 28 [Art. 515],

M cont. 1 inc. el. more than D + E + F.

It is supp. that A, B, and C each cont. 34.8 inc. less than K+L+M,

id est, 29-1 less than 9D, id est, 217-8 glob. inc.

H with slit coat. cont. 77.5 more than white cyl.

crown with oblong coat.

33.7

N. 12.

A and C with circ. coatings are supposed to contain same as B.

N. 14.

[Straw electrometer.

See Art. 560, note.]

[Usual degree of electrification. See Art. 329 and note 10.]