RADIATIOJ^ IN ABSOLUTE MEASURE. 
615 
Calculation of Eesults of April 2 , 1890, 
Sooted globe in vacuum ; thin coating. Vacuum M. (Apparatus, fig. 2.) 
0) 
Time. 
(2) 
Observed 
deflection. 
(3) 
Corrections 
and sum of 
corrections. 
(4) 
Propor¬ 
tional 
deflec¬ 
tion. 
(5) 
Log. of 
propor¬ 
tional 
deflection. 
(6) 
Differ¬ 
ences of 
logs, of 
propor¬ 
tional 
deflec¬ 
tions. 
. 
Emissivity 
(calculated by 
multiplying 
numbers 
of column 6 
by 
4-323 X 10-3) 
(8) 
Log. of 
difference 
of tempera¬ 
tures 
of globe and 
surround¬ 
ings. 
(9) 
Differ¬ 
ence of 
tempera¬ 
tures of 
globe and 
sni’i’ound- 
ings. 
p.Ji. 
3.40 
1034-5 
178-7 
10-7 
168-0 
855-8 
2-9324 
•0643 
2-780x10-1 
2-3792 
239°-4 
3.45 
864-6 
126-6 
6-6 
120-0 
738-0 
-8681 
•0468 
2-024 
2-3149* 
206-5 
3..50 
756-3 
93-7 
4-2 
89-5 
662-6 
-8213 
•0453 
1-959 
2-2681 
185-4 
3.55 
669-9 
72-9 
2-9 
70-0 
597-0 
-7760 
•0438 
1-894 
2-2228 
167-0 
4.0 
597-0 
57-2 
2-0 
55-2 
539-8 
-7322 
-04-22 
1-824 
2-1790 
151-0 
4.5 
535-9 
46-1 
1-5 
44-6 
489-8 
-6900 
•0408 
1-764 
2-1368 
137-0 
4.10 
483-1 
37-3 
1-1 
36-2 
445-8 
-6492 
•0397 
1-716 
2-0960 
124-7 
4.15 
436-7 
29-8 
0-8 
29-0 
406-9 
•6095 
•0372 
1-608 
2-0563 
113-9 
4.20 
399-0 
23-5 
0-6 
24-9 
373-5 
•57-23 
•0362 
1-565 
2-0191 
104-5 
4.25 
365-2 
21-6 
0-5 
21-1 
343-6 
-5361 
•0347 
1-500 
1-9829 
96-14 
4 30 
335-4 
18-2 
0-4 
17-8 
317-2 
•5014 
•0331 
1-431 
1-9482 
88-76 
4.35 
309-4 
lo'I 
0-3 
15-1 
294-0 
•4683 
•0317 
1-370 
1-9151 
82-24 
4.40 
286-5 
13-3 
0-2 
13-1 
273-2 
•4366 
•0301 
1-301 
1-8834 
76-45 
4.45 
266-5 
11-5 
0-2 
11-3 
255-0 
•4065 
•0286 
1-237 
1-8533 
71-34 
4.50 
248-4 
9-7 
0-1 
9-6 
238-7 
•3779 
1-8247 
66-79 
4.55 
5.0 
218-9 
7-4 
0-1 
7-3 
211-5 
•3253 
•0526 
1-137 
1-7721 
59-17 
* Vacuum not good enough at first rea,ding or first and second. 
