👉 Seismometers are devices used to measure seismic waves, which are vibrations caused by the movement of plates on Earth. These instruments can be used for both direct measurement and analysis of seismic activity in the ground. The primary function of a seismometer is to detect and record earthquakes. They work by bouncing small, vibrating stones or other objects off the surface of the earth (such as rocks) and measuring the resulting vibrations. The amplitude of these vibrations is proportional to the strength of the earthquake and can