REVERSIBLE AND IRREVERSIBLE SYSTEMS UNDER INFLUENCE OF LIGHT. 391 
_ i_ 
c < 
2,oS , 2’d ffi 
• ass's 
Average 
volts 
observed 
in 
io- 6 
units. 
Calibration 
of 
Nalder Nl, 
in 
centimetres 
(right 
and left). 
Calibration 
of 
Nalder N2, 
in 
centimetres 
(right 
and left). 
Distance 
of 
light from 
quartz 
vessel, in 
centi¬ 
metres. 
Distance 
of 
light 
from 
Rubens 
thermo¬ 
pile, 
in 
centi¬ 
metres. 
Intensity 
of light 
measured 
with 
Rubens 
thermopile 
at the 
distance 
given 
by Column 
XVI., in 
millimetres 
(right 
and left). 
Tempe¬ 
rature of 
bath, 
in ° C. 
Temperature 
of room, 
in ° C. 
Kind of cell. 
Kind of 
light used. 
Volts and amperes when 
arc was used. 
Photo¬ 
graphic 
plate 
number. 
XI. 
XII. 
XIII. 
XIV. 
XV. 
XVI. 
XVII. 
XVIII. 
XIX. 
XX. 
XXI. 
XXII. 
Light, 
AgN0 3 
Solution 
in Dark, 
Ag in th< 
i Dark. 
21’1 
18-0 
17-4 
19-8 
37 1 
110 
116 
17'5 
17 '5 
constant 
total light 
arc : 65 volts, 6 ampfires 
2 
23'1 
19-6 
— 
— 
— 
— 
— 
— 
— 
— 
— 
28-1 
24-0 
17-4 
19-8 
33 
110 
116 
17'5 
17 ’5 
constant 
total light 
arc : 65 volts, 6 amperes 
30-2 
25-7 
— 
— 
- 
— 
— 
— 
— 
- 
— 
— 
— 
— 
17'4 
19 -8 
33 
110 
116 
17'5 
17-5 
constant 
total light 
are: 65 volts, 6 amptSres 
23-1 
24-0 
17-4 
19-S 
33 
110 
116 
17-5 
17-5 
constant 
total light 
arc : 65 volts, 6 amperes 
32-1 
27 -4 
— 
— 
~ 
~ 
40‘5 
34'4 
17-4 
19-8 
26 
110 
121 
ordinary 
temperature* 
constant 
total light 
arc -. 65 volts, 6 ampferes 
3 
42-8 
36-4 
— 
— 
— 
— 
— 
— 
19-0 
16-9 
17'4 
19-8 
36 (7) 
110 
115 
ordinary temperature 
constant 
total light 
arc: 65 volts, 6 amperes 
63'9 
54-4 
17 '4 
19-8 
26 
110 
127 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amperes 
4 
32-8 
27-9 
17 -4 
19-8 
36 
110 
127 
ordinary temperature 
constant 
total light 
— 
33-0 
28'1 
17-4 
19-8 
36 
110 
135 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 ampfsres 
5 
37-5 
31'9 
18'3 
19-8 
36 (7) 
110 
129 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amp&res 
6 
17-6 
15'0 
18-3 
19-8 
36 (7) 
110 
129 
ordinary temperature 
constant 
blue screen 
arc : 65 volts, 6 amperes 
2'9 
2'4 
18-3 
19'8 
36 (7) 
110 
129 
ordinary temperature 
constant 
yellow green 
arc : 65 volts, 6 ampSres 
screen 
2-1 
1-8 
18-3 
19-8 
36 (7) 
110 
129 
ordinary temperature 
constant 
red screen 
arc : 65 volts, 6 amperes 
’1 — 
- 
— 
17’2 
27 
110 
112 
ordinary temperature 
constant 
total light 
are r 65 volts, 6 amperes 
— 
12‘3 
20-6 
17-4 
17-2 
36 (7) 
110 
112 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amperes 
7 
21-7 
36-3 
17-4 
17 -2 
26 (7) 
110 
112 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amperes 
43-6 
38'4 
17-4 
17’2 
27 
110 
112 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 ampSres 
8 
26'3 
23'2 
17-4 
17’2 
37 
110 
112 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amperes 
46-9 
39-8 
17-4 
17'2 
27 
no 
112 
ordinary temperature 
constant 
total light 
arc : 65 volts, 6 amperes 
9 
27-6 
23-4 
17-4 
17'2 
37 
no 
112 
J ordinary temperature 
constant 
| total light 
arc : 65 volts, 6 amphres 
ordinary temperature of the room, i.e. y between 17°'5 and 20° C. 
