Here's a breakdown:
* Seismometer: This is the primary instrument used to detect and record ground motions caused by earthquakes, volcanic eruptions, and other seismic events.
* How it works: Seismometers use a suspended mass that remains relatively still while the ground around it moves. The difference in movement between the mass and the ground is recorded. This is often displayed as a seismogram, which shows the amplitude and frequency of the ground vibrations.
There are different types of seismometers, each designed to capture specific types of ground motions. They are essential for studying earthquakes, understanding the Earth's interior, and even monitoring nuclear tests.
