What's the difference between seismograph and seismometer?

Seismograph


Definition:

  • (n.) An apparatus for registering the shocks and undulatory motions of earthquakes.

Example Sentences:

  • (1) In spite of this, the scope of its uses continues to increase and it remains an indispensable instrument of neurophysiological diagnosis, especially in its capacity as a 'seismograph' of the brain.
  • (2) Looking at the bizarre, sinister world of North Korea’s leadership, it is almost anyone’s guess why the world’s most reclusive regime decided to mark the new year by exploding a device it claimed was a hydrogen bomb , sending seismographs quivering and unleashing new tensions in international relations.
  • (3) These quakes were substantial – measuring magnitude five – but had been invisible because they did not show up on seismographs.
  • (4) That morning the USGS servers received data from various seismographs, translated them into figures and sent them over the net to the journalist’s personal computer.
  • (5) The first explosion was registered on the seismograph at the University of Mexico at 05 h 44 min 52 s and was followed by a dozen explosions within the next hour, some of them of BLEVE type (Boiling Liquid Expanding Vapour Explosion) due to rupture of one or more storage tanks.
  • (6) Political volcanologists watching for eruptions should be turning their seismographs on the NHS.

Seismometer


Definition:

  • (n.) An instrument for measuring the direction, duration, and force of earthquakes and like concussions.

Example Sentences:

  • (1) By now my controversy seismometer is going off the Richter scale: Muslims, Jews, Hitler – it's like a mass invitation to every irate commentator in the blogosphere.

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