Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 277
^ two button switchesmounted on the same base, the upper switch connected to the two ad-jacent posts marked B, closes tlie battery circuit when a slight pres-sure is applied. The lower switch is connected to the other two posts Rheostat, … ETECTOR Galvanometer 232.—Students Wheatstone Bridge (Lozenge Pattern) with theNecessary Apparatus Required for Measuring Resistance.Connections should be made as depicted. MEASUREMEXT OF BESISTAXCE. 259 marked G, an»i is inserted in series with the galvanometer, Fig. 232.AVhen the button is…
Electricity · Magnetism
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