Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 248
, T is a228 MEASUREMENT OF PRESSURE. 22ti cylindrical tank filled with water under pressure due to the weightof the piston P, and AB is a pipe for transmitting the water to pointl\. With the valve at B closed the pipe is full of water, but there isno current through it. The gauges at A and B, each… … Fig. 202.—Cylindrical Tank of Water and Trans- mission Pipe to Illustrate the Fall of Potential. and a current of water is passed through the pipe,the pressure on the gauge at A is still 60 pound-,while at B it is only 50 pounds. The weightof water is neglected. There is thus a difference in…
Electricity · Magnetism
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