A seismograph is a scientific instrument detects and records earthquakes. Needless to say if a large earthquake occurs closeby you do not need anything to tell you what has happened.
Every day however, there are minor seismic events which may not be noticeable unless you have a sensitive seismograph to make a record of them . These small seismic events do not usually cause any great damage but are interesting to demonstrate that the crust of the earth is in a constant state of movement.
Using our free plans you can build a very sensitive seismograph which will make a record of even distant earthquakes hundreds or thousands of miles away fro your location. It all depends on the magnitude of the quake naturally. A big earthquake can be detected much further away from you than a smaller disturbance can.
This seismograph filters out nearby vibrations such as the shaking caused by traffic going by. It records real seismic occurences in the earths crust only.
Go to our website to download your free plan for building a seismograph.
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