FIELD: physics; measurement.
SUBSTANCE: oscillating receiver incorporates a hollow piezoceramics sphere with outer conductive coating and mercury in the sphere cavity. Oscillating receiver is provided with metal sphere secured to metal rod in the centre of cavity at a distance from its surface. Mercury volume is less than cavity volume.
EFFECT: provides for measurement of vibratory acceleration vertical component only.
1 dwg
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Authors
Dates
2009-02-10—Published
1971-10-07—Filed