THEEMAL EFFECTS OF FLUIDS IN MOTION. 
33.3 
Series XVI. 
Position of the bulb of the 
thermometer in respect to the 
direction of motion. 
Velocities in the alternate 
experiments, 
in feet per second. 
Difference of 
thermal effect. 
Thermal effect 
due to 
low velocity. 
Thermal effect 
due to 
high velocity. 
r 
3-84 and 1-92 
0-002 
0-001 
0 I 
0-003 1 
1 
7‘68 and 3’84 
0-007 
0-003 
0-010 i 
15-36 and 7*68 
0-143 
0-010 
0-153 
In front of the globe 
23-04 and 15-36 
0-106 
0-153 
0-259 
38-4 and 15-36 
0-133 
0-153 
0-286 
57-5 and 15-36 
0-211 
0-153 
0-364 
r 
3-84 and 1-92 
0-029 
0-007 
0-036 
7-68 and 3-84 
0-109 
0-036 
0-145 
15-36 and 7-68 
0-138 
0-145 
0-283 
At the side of the globe ...<| 
23-04 and 7*68 
0-181 
0-145 
0-326 
38-4 and 23-04 
0-000 
0-326 
0-326 
57-0 and 23-04 
0-087 
0-326 
0-413 
3-84 and 1-92 
0-011 
0-004 
0-015 
7-68 and 3-84 
0-024 
0-015 
0-039 
15-36 and 7-68 
0-147 
0-039 
0-186 
In the rear of the globe ...<; 
23-04 and 15-36 
0-076 
0-186 
0-262 
38-4 and 15-36 
0-062 
0-186 
0-248 
57-0 and 15-36 
0-091 
0-186 
0-277 
70-92 and 15-36 
0-204 
0-186 
0-390 
In the next experiments, a 12-incli globe, such as is used in schools, was fixed at a 
distance of 3 feet from the axis of the revolring apparatus. The ether thermometer 
was generally employed, as in the last series, but for the highest velocity a thermo- 
electric junction of thin wfies placed close to the globe registered the thermal effect. 
Series XVII. 
Measurer of heat, and its position 
in respect to the direction of 
the motion. 
Velocities in the alternate 
experiments, 
in feet per second. 
Difference of 
thermal effect. 
Thermal effect 
due to 
low velocity. 
Thermal effect 
due to 
high velocity. 
r r 
3-72 and 1-24 
0-019 
0-009 estim‘1. 
0-028 
.2 
Ether thermometer ...< 
7-44 and 3-72 
0-008 
0-028 
0-036 
1 
14-88 and 7-44 
0-028 
0-036 
0-064 
< 
hermo-electric junction 
39-68 and 7-44 
0-200 
0-036 
0-236 
i. 
r r 
3-72 and 1-24 
0-007 
0-003 estim'*. 
0-010 
Ether thermometer ...< 
7-44 and 3-72 
0-013 
0-010 
0-023 
1 
14-88 and 7-44 
0-024 
0-023 
0-047 
c- 
W 
^Thermo-electric junction 
39-37 and 7-44 
0-170 
0-023 
0-193 
0 
r r 
3-72 and 1-24 
0-024 
0-012 estim'^. 
0-036 
s < 
Ether thermometer 
7-44 and 3-72 
0-022 
0-036 
0-058 
11 
L 
14-88 and 7-44 
0-046 
0-058 
0-104 
^Thermo-electric j unction 
37-2 and 7-44 
0-140 
0-058 
0-198 
In the experiments in which air was blown against a sphere, we made use of a large 
organ-bellows, from which a constant stream of air could be kept up at velocities 
dependent upon the weights laid on. In our first trials, the air issued from a circular 
MDCCCLX. 2 Y 
