1910-11.] 
Young’s Modulus under an Electric Current. 
195 
Iron. 
Length = 
Area of cross-section = 
Elongation weight = 
Total load on wire = 
Load per sq. mm. = 
98*34 cms. 
*0005474 sq. cm. 
500 grams. 
1 kilo. 
18*3 kilos. 
Table V. 
No. 
Temp. 
Elongation for 
500 grams. 
No. of 
Observations. 
M. 
1 
19*4 C. 
'05072 cm. 
8 
17-38 xlO 11 
2 
24-8 
•04908 
8 
1796 
3 
29*3 
•04817 
9 
18-30 
4 
37*1 
•04647 
9 
18-97 
5 
45-2 
•04537 
8 
19-43 
6 
50-5 
•04532 
8 
19-45 
7 
60-9 
•04573 
7 
19-28 
8 
66-3 
•04606 
8 
19T4 
9 
75-0 
•04662 
9 
18-89 
10 
83*9 
•04757 
10 
1853 
11 
94T 
*04838 
10 
18-22 
12 
102-8 
•04895 
8 
18-01 
13 
111*7 
*04938 
9 
17-85 
14 
122-5 
•04969 
8 
17-74 
15 
116-1 
•04975 
7 
17-72 
16 
109-6 
•04960 
7 
17-77 
17 
100-2 
*04908 
8 
17-96 
18 
91-8 
•04857 
8 
18*15 
19 
80-4 
•04788 
9 
18-41 
20 
75T 
•04732 
9 
18-63 
21 
64-3 
•04669 
8 
18-88 
22 
55-0 
•04676 
10 
18-85 
23 
50'6 
•04709 
9 
18-72 
24 
46-1 
•04747 
9 
18-57 
25 
38-7 
•04836 
7 
18-23 
26 
29-8 
•04958 
8 
17-78 
27 
23'2 
•05046 
8 
17-46 
28 
194 
•05072 
9 
17*38 
Total load — 1*2 kilos. 
= 21*9 kilos, per sq. mm. 
Table VI. 
No. 
Temp. 
Elongation for 
500 grams. 
No. of 
Observations. 
M. 
1 
19*5 C. 
‘05074 cm. 
8 
17-37 xlO 11 
2 
22-6 
•05009 
8 
17-60 
3 
28-3 
•04916 
9 
17-93 
4 
34-9 
■04799 
9 
18-37 
5 
40-1 
•04739 
10 
18-60 
6 
45-8 
•04732 
10 
18-63 
7 
52-2 
•04741 
8 
18-59 
8 
61-5 
•04786 
9 
18-42 
9 
69-7 
•04807 
7 
18-34 
