Vol. 6, 1920 
PHYSICS: E. H. HALL 
TABLE 15: GOLD. 
Ki = —0.934, K2 = 0.001 
C, or 
C2 = 1.8 X 10-8 
C2 = 2.0 X 10-8 
C2 
= 2.1 X 10-8 
at 0° 
Q 
So 
Ci X 10-6 
(kf-^k) 
at 100° 
Q 
Ci X 10-6 
at 100° 
Q 
So 
Ci X io-« 
(kf-i-k) 
at 100° 
0.001 
0 
.032 
—29 
.5 
.024 
—33 
1 
.011 
—38 
0.01 
0 
.051 
—31 
.007 
.5 
.040 
—35 
.007 
1 
.018 
—39 
.006 
0.05 
0 
.122 
—38 
.046 
.5 
.096 
—42 
.046 
1 
.050 
—44 
.046 
0.10 
0 
.188 
^5 
.096 
.5 
.158 
—50 
.095 
1 
.083 
—50 
.095 
0.20 
0 
.292 
—56 
.195 
.5 
.256 
—62 
.194 
1 
.136 
—58 
.194 
0.25 
0 
.334 
—60 
.244 
.5 
.294 
—77 
.293 
1 
.158 
—64 
.244 
TABLE 16: MOLYBDENUM. 
Ki = —4.334, K2 = 0.015 
C, or 
C2 = 27 X 10- 
8 
C2 = 29 X 10-8 
C2 = 32 X 10-8 
at 0° 
Q 
CiX 10-6 
(kf^k) 
at 100° 
Q 
So 
CiX 10-6 
(kf-^k) 
at 100° 
Q 
So 
CiX 10-6 
at 100° 
0.001 
0.01 
0.05 
0.10 
0.20 
0 
0 
0 
0 
0 
.025 
.030 
.047 
.064 
.094 
—138 
—146 
—173 
—197 
—220 
.035 
.083 
.181 
.5 
.5 
.5 
.5 
.5 
.017 
.020 
.030 
.042 
.061 
—155 
—161 
—180 
—204 
—240 
.035 
.083 
.179 
1 
1 
1 
1 
1 
.008 
.010 
.015 
.020 
.030 
—175 
—180 
—192 
—205 
—230 
.044 
.083 
.180 
Comments 
Lead does not appear in these tables, for the reason that a for this metal 
is so small that we have no formula for it. Zero value for a could be 
accounted for, according to the principles of this paper, in either of two 
ways: 
First, as equation (8) shows, {kf k) might be zero. 
Second, if in equation (8) we make {kf -^- ^) a constant, of whatever 
value, ^ and is zero ii n oc T.^ ^ 
These tables, like the experimental values of a by means of which they 
are made, have no great pretension to accuracy. For example, it is doubt- 
ful whether much confidence can be placed in the small value of K2, 
very nearly 0.001, found by Bridgman for gold. Yet the effect of neglect- 
ing this value is considerable. Thus, if we call K2 = 0 for gold, we get 
