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en.wikipedia.org/wiki/Seismometer

Seismometers are instruments that measure motion of the ground, including those of seismic ... In other systems the weight is allowed to move, and its motion produces a voltage in a coil attached to the mass and moving ... Originally, European seismographs were placed in a particular area after a destructive earthquake.

www.answers.com/Q/The_part_of_a_seismograph_that_does_not_move_during_an_earthquake_is_the

What is the part of the seismograph that moves during an earthquake? The part of the seismograph that moves during an earthquake is called the pen. Edit.

www.livescience.com/6210-seismographs-work.html

Mar 11, 2010 ... During an earthquake, the seismometer remains still while the case around it ... different speeds and through different parts of the Earth during a quake. ... measure movement in one direction, many seismograph stations have ...

earthquake.usgs.gov/learn/topics/keeping_track.php

The horizontal seismograph shown here moves only in the horizontal plane. ... is an important element in seismology, clocks are always part of a seismograph ...

calvin.edu/directory/places/seismograph

A seismograph, in its simplest form, is built with a free-hanging needle that ... it moves back and forth with the motion of the earth during the earthquake. ... although very frightening, are still an essential part of the world in which we reside.

earthquake.usgs.gov/learn/kids/eqscience.php

The seismic waves shake the earth as they move through it, and when the ... The difference in position between the shaking part of the seismograph and the ...

cse.ssl.berkeley.edu/lessons/indiv/davis/inprogress/QuakesEng3.html

You are free to move around from one part of the lesson to another by clicking on the ... Perhaps you remember being in an earthquake--the ground rumbles, hanging lamps ... Today geologists measure earthquake waves with a seismograph.

www.iris.edu/hq/files/programs/education_and_outreach/aotm/6/SeismicWaveBehavior_Building.pdf

shake the ground back and forth in the direction that the wave is moving. ... seismograph stations. ... earthquake the seismic waves move the ground, thus .... Lithosphere—solid, rocky, outer part of the Earth, approximately 50 miles thick, ...

www.encyclopedia.com/earth-and-environment/geology-and-oceanography/geology-and-oceanography/core-geology

Today, three types of seismographs are used in earthquake research, each with a ... Because these waves move so quickly, the short-period seismograph takes less than ... 3 At a specialized factory the component parts of the seismograph are ...