upon the Dimensions of Iron and Steel Ban 



237 



Experiment 22. Soft steel wire, one foot long, a quarter of 

 an inch ni diameter. Tension SO lbs. 



Experiment 23. Same soft steel wire. Tension 462 lbs. 



Deflection of 

 galvanometer. 



+34 55 

 



+ 45 5 

 



+60 15 

 



Tangent of 

 deflection. 



698 

 



1003 







1750 

 



Elongation or 



shortening of 



wire. 







01 E. 





 2E. 



0-4 S. 

 0-6 E. 



Total 

 elongation. 





 01 



01 

 03 



-01 

 0-5 



Magnetic 

 intensity 

 of wire. 



Square of mag- 

 netic intensity 

 I divided by total 

 I elongation. 



+2-6 

 + 1-4 



+3-4 



+2-0 



+4-2 

 +2-4 



I960 



1333 



1152 



Experiment 24. Same soft steel wire. Tension 1680 lbs. 

 Ir'ermanent magnetism to begin with +I'8 



Deflection of 

 galvanometer. 



-2f 13 

 



-35 13 

 



-41 35 

 



-58 45 

 



Tangent of 

 deflection. 



Elongation or: 



sliortening of 



«irc. 



shortening 



effect. 



Magnetic 

 intensity 



of wire. 



388 

 



706 

 



985 

 



\U% 

 



0-2 S. 

 0-2 E. 



08 S. 

 0-8 E. 



1-3 S. 

 1-3 E. 



2-5 S. 

 2-5 E. 



0-2 

 



0-8 

 



1-3 

 



-0-4 



+0-2 



-2-2 

 -11 



-2!t 

 -16 



-37 

 -2-2 



Current multi- 

 plied by mag. 

 netic intensity 

 (lividcil by 

 ehortcning effect 



77 



194 



219 



244 



