530 



Mr. H. Tomlinson. The Influence of 



Alteration of 



specific 

 resistance per 

 unit divided 

 by increase 

 of length 

 per unit. 



-1-986 

 -2-203 

 -0-719 

 + 4-486 



Alteration of 

 resistance per 

 unit divided 

 by increase of 

 length per 

 unit. 



-0-486 

 -0 703 

 + 0-781 

 + 6-368 



Alteration of 

 resistance per 

 unit produced by 

 a longitudinal 

 stress of 1 grm. 

 per sq. cm.* 



I 



rH n 

 X 



CO CO 



<M CD rH OS 

 H3 GO H« HH 

 (N CO GO O 

 rH CO 



1 1 + + 



Specific 

 resistance, i.e., 

 resistance in 

 ohms of 1 c.c. 

 between 

 opposing 

 forces. 



00 



o 



rH 



X 



O Gi \0 O 

 kO GO %0 CO 

 cq xo CO 



" Simple 

 rigidity " 

 in grams 

 per sq. cm. 



© 



rH 



X 



I CO GO 

 <?3 H3 

 rH J> 



" Young's 

 modulus " 

 in grams 



Y1PV QH PIT! 

 IJC/i. OVJt \^J_i_i» 



© 



rH 



X °° 

 VO J> © OS 

 O rH CO GO 

 O GO Tfl O 

 N rH <M 



Density. 



8-231 

 8-259 

 1-743 

 21-523 



Condition. 



TJnannealed . 

 Annealed . . . 

 TJnannealed . 

 TJnannealed . 



Metal. 



Cobalt .... 



Cobalt 



Magnesium . 



Platinum- 

 iridium 



