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Vertical Seismograph

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Published on Nov 6, 2008

Animation of the principles of a drum-style vertical seismograph station that records up-and-down movement. Seismographs are designed so that slight earth vibrations move the instrument. The suspended mass remains at rest as the spring absorbs some of the motion. The stylus (pen) affixed to the mass, records the relative motion between itself and the rest of the instrument, thus recording the ground motion.

More Info at:
http://www.iris.edu/hq/programs/educa...

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