Galitzin electromagnetic seismograph
Sismógrafo electromagnético de Galitzin
- Date
- 1906 · confidence medium
- Place
- Saint Petersburg, Russia
- Credited to
- Boris Golitsyn (Galitzin)
- Field
- Cosmos & Earth
What it is
Boris Golitsyn replaced mechanical recording with an electromagnetic transducer and a galvanometer with photographic recording, so ground motion was amplified far more and more stably. It was the reference seismograph of the world networks until the 1930s.
The first instrument dates from 1906; the definitive galvanometer model appeared around 1911. Wiechert (1900) and Milne had already built high-quality mechanical seismographs.
What it led to
- world seismic networks with comparable records
- precise location of foci and study of the Earth's interior