620 LENZ ON ELECTRO-MAGNETISM,. 
A = 38°81 therefore L+/+aA = 712-06, 
a’ = 10°78 L+1+A' = 68403, 
A= 5°44: L4/+ A'= 678°69, 
the equation (A.) gives therefore 
2 = 712°06° p* sin. (19° 3/), 
x! = 684-03 - p- sin. (19 48 ), 
a"'= 678°69 * p* sin. (19 51), 
or, if the two last electromotive powers be compared with the first, the 
proportions 
@ 71206 - sins (19° 3!) woman 
o> gues ae (Oe) 
2% 712-06 +, sin: \€19°. 3!) 
SS ee re 
a! 67869 * sin. (19° 51’) eae 
Both propositions differ so little from unity that we are fully warranted 
in concluding that the electromotive power which the magnet produces 
in the wire No. 1 is quite as strong as those in the wires Nos. 3 and 4, 
although the latter possesses a diagonal almost four and seven times 
greater, and therefore that the electromotive power is independent of 
the thickness of the wires. A second confirmation of this position is 
found in the following experiment previously made : 
Angle of Deviation. 
Mean. 
1 2 3 | 4 
10 Cony. of wire No.3] 36°3 | 37°8| 33°5| 35°7| 35°82 
36:0 | 37:0] 3251] 349] 340 Lag. 
No. 214 35-4. | 36:8| 326] 35°0| 35°9 bs si 
No.3| 33°6 | 35:5) 35°7| 37°3| 35°52 
Consequently we have for 
No. 2, @ = 34°95, further A= 34°00, also L+/+ A=707°25 
No. 3, «! = 35°67, A'= 11°52, and L + / + A'=684-77, 
consequently 
2 _ '707-25° sin. (17° 29') 
a! ~ 684-77 * sin. (17° 50’) 
Here also the proportion is so near to unity that we may from this, 
combined with the above results, regard it as an established truth, that 
“ the electromotive power produced in the spirals by the magnet re- 
mains the same for every thickness of the wires,or is independent of it.” 
From this law again it immediately follows that in rings of wires of 
various thickness surrounding the armature of the magnet, the electric 
= 1°013. 
