Question

Who was the first person to invent the seiesmograph?
What is the work of seismograph?​

Answer 1

it is a device used to measure the intensity of the earthquake.

John Milne was the English seismologist and geologist who invented the first modern seismograph and promoted the building of seismological stations

Answer 2

The first person who invented seismograph was John Milne.

Seismograph is an instrument that measures and records information about earthquakes.