. Early geophysical papers of the Society of Exploration Geophysicists . Fig. 1. Susceptimeter arranged for use with external vibration galvanometer. Several sample containers, filled with pulverized materials, may be seen near the galvanometer. These glass containers are provided with aluminum friction caps, and have outside dimensions of cm dia. by 10 cm long. tapped inductance L3, and vernier variable inductor L4. The resistance bal- ance of the bridge is accomplished by means of r&, and this balance is main- tained for different positions of the inductance switch, S\, by the loadin
. Early geophysical papers of the Society of Exploration Geophysicists . Fig. 1. Susceptimeter arranged for use with external vibration galvanometer. Several sample containers, filled with pulverized materials, may be seen near the galvanometer. These glass containers are provided with aluminum friction caps, and have outside dimensions of cm dia. by 10 cm long. tapped inductance L3, and vernier variable inductor L4. The resistance bal- ance of the bridge is accomplished by means of r&, and this balance is main- tained for different positions of the inductance switch, S\, by the loading re- sistors ri and r2. Low potential alternating current is supplied the bridge through the transformer T. The selector switch, 54, and variable resistor, r4, provide means for adjusting the bridge current, while its value may be determined with the ammeter A. 18
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Keywords: ., bo, bookcentury1900, booksubjectpetroleum, booksubjectprospecting
