Each of the 120 stations in the World Wide Standard Seismological Network used an instrument of this sort to test the sensitivity of its galvanometers. This one is marked “Geotech / Model 8431 / Galvo ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results