Seismograph
device · 132 · Ancient world
Records ground vibrations (Zhang Heng; modern ones use pendulums).
What it is made of
- Pendulum — has part. An inertial mass.
Principles and materials it uses
- Bronze — is made of. Zhang Heng’s seismoscope is a bronze vessel.
History: what it evolved from and what it influenced
- Zhang Heng’s seismoscope — evolved from. The first instrument for detecting earthquakes.
What it is a kind of
- Sensor — is a kind of. A sensor.