International Library of Technology · Scranton, International Textbook Co. · leaf 19
903, andsuspended in a glass jar by a fine silverwire. The wire passes up through aglass tube and is fastened to a brassstopper b^ called the torsion bead. Thetorsion head is graduated in degrees, andis capable of being revolved around uponthe glass tube. Another gilt pith-ballin is fastened to the… … Fig. 90.3. 1454 PRINCIPLES OF 221)2. To use the torsion balance: Turn the torsionhead around until the two pith-balls m and n just toucheach other. Remove the glass rod «, and communicate thecharge to be measured to the gilt ball vi. Replace the glassrod in the jar. The two gilt balls will touch…
Electrical engineering
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