Seismograph
A seismograph is an instrument used to measure and record ground vibration caused by explosions and earthquake shock waves. In the late 1800s, John Milne (1850–1913), an English min...
Read more
Seismograph
Seismographs are instruments used to measure and record ground motion, or seismic waves, caused by explosions and earthquakes. In the late 1800s, John Milne, an English mining engineer, de...
Read more
Seismograph
Seismograph