Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Geology/Geography and other Earthquake topics.
The principal instrument used to record earthquakes is the seismograph, the name of which derives from Greek words meaning "earthquake" and "to write." The main function of a seismograph is to record vibrations in the ground. The most modern form of seismograph is basically a weight suspended by springs in such a way that its own inertia tends to keep it still when the ground moves under it.
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