Seismograph. Artwork of a seismograph or seismometer machine for recording ground movements caused by seismic activity, such as earthquakes. The devic

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Seismograph. Artwork of a seismograph or seismometer machine for recording ground movements caused by seismic activity, such as earthquakes. The device consists of a heavy pendulum inside a casing that is fixed to the ground. A pen is suspended beneath the pendulum, in contact with a paper drum. When an earthquake or tremor occurs, the pendulum and pen remain stationary, but the paper drum and casing move with the ground. A record of the movement is thus recorded on the paper drum. This trace is known as a seismogram and is used to measure the intensity of an earthquake. Seismographs may also be of use in predicting the occurrence of volcanic eruptions.

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Size: 4992px × 3543px
Photo credit: © GARY HINCKS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: artwork, device, earth, earthquake, equipment, geographical, geography, geological, geology, illustration, machine, pen, pendulum, physical, printout, record, recording, research, seismic, seismograph, seismological, seismology, seismometer, shock, trace, tremor, tremors, warning, waves