THERMAL EMISSIYITY OF THIN WIRES IN AIR. 
389 
Table IX.— continued. 
Diameter, 8T mils, or 0'206 millim. Length, 27'86 centims. Water-jacket, 12°‘3 0. 
April 26th, 1888. Fig. 11. 
Current, 
in amperes. 
P.D., 
in volts. 
Resistance, 
in ohms. 
Equivalent 
temperature of 
wire. 
Emissivity. 
0-50 
0-5200 
1-040 
°0. 
24-8 
•002761 
0-60 
0-6366 
1061 
31-2 
•002682 
0-70 
0-7589 
1-084 
38-6 
•002681 
0-80 
0-8922 
1115 
48-0 
•002654 
0-90 
1-0336 
1-148 
58-0 
•002696 
1-00 
1-1855 
1-186 
69-5 
•002747 
1-20 
1-5423 
1-285 
101-3 
•002755 
1-40 
1-971 
1-408 
141-8 
•002822 
1-60 
2-478 
1-549 
188-7 
•002974 
1-80 
3-093 
1-718 
242-0 
•003206 
2-00 
3-792 
1-896 
309-0 
•003375 
Diameter, 6 mils, or 0’152 millim. Length, 27*46 centims. Water-jacket, 12° C. 
April 24th, 1888. Fig. 11. 
Current, 
in amperes. 
P.D., 
in volts. 
Resistance, 
in ohms. 
Equivalent 
temperature of 
wire. 
Emissivity. 
0-075 
0-1283 
1-711 
0 C. 
15-2 
•000547 
o-io 
0-1716 
1-716 
16-4 
•000709 
0-15 
0-2600 
1-734 
19-3 
•000972 
0-20 
0-3488 
1-744 
20-8 
•001442 
0-25 
0-4390 
1-756 
23-0 
•001814 
0-30 
0-5334 
1-778 
26-6 
•001993 
0-40 
0-7238 
1-810 
32-6 
•002556 
0-50 
0-9414 
1-883 
45-9 
•002525 
0-60 
1179 
1-965 
60-2 
•002663 
0-70 
1-449 
2-069 
78-2 
•002781 
0-80 
1-744 
2-180 
97-8 
•002954 
0-90 
2-093 
2-326 
125-4 
•003013 
1-00 
2 - 466 
2-466 
150-8 
•003222 
1-20 
3-398 
2-832 
219-5 
003560 
1-40 
4-620 
3-300 
314-0 
•003873 
