

Figure 9.--Dew recorder, circuit No. 2 with prism over the CdS cell. (a) Fixed 
light source; (b) prism; (c) circuit; (d) Amprobe 7400-ohm, 
recorder; (e) adjustable transformer for light source. 

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7 8 1 { 12 1 2 
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s 8 Hi “iz } rae 3 gis 4 
oa ; 4 os cr 8 RAS. 
2 oy so is Roe Bes © 
SZ 4 hie Y aM re PA zg Belk 
24 so) _n / 
i: tee $ = 7 
7 
aoe eae ; : 
oe xs Bs - ra 9 
: t we dba 
—— SC ees 
2 = Stig 
5 B 12 i 3 ws 4 
: 5 ¥ 8 
x ‘ “ : Ly 
IP a ry ee al |? Apo ™ 2 to ¥ = 
WAY Oca A: I DY ARTE Peal) HOGA , / 
0-50 microampere 
Figure 10.--Recording 
of dew formation on 
night of Oct. 4 1963) 
from 10:10 p.m. 
(bottom strip) to 
2:10 a.m. (top strip). 
The line represents 
moonlight and not a 
fixed light source. 
The rise in the line 
at 12:05 a.m. re- 
presents the moon 
climbing above the 
trees. Dew is re- 
presented by the 
breaking up of the 
line. The first 
period (3rd strip) 
lasts for 30 minutes 
from 12:35 a.m. to 
1:05 a.m., and the 
second longer period 
(top strip) from 
1:30 on. 
