Borehole seismometer component, 1980.

Borehole seismometer component, 1980.
4 0 c m
actual image size: 23cm x 32cm


This is the vertical component of a three component set of seismometers, designed to fit down boreholes. The components weigh only a few grammes each and their movements are detected by coil and magnet jackets and cabled to the surface. They can be tuned to various frequencies according to their intended purpose.

© Science Museum / Science & Society Picture Library

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