Seismometer, artwork

Seismometer, artwork

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Credit: CLAUS LUNAU/SCIENCE PHOTO LIBRARY

Caption: Seismometer. Artwork showing the basic principle of a seismometer, a device used to record earthquakes. A heavy weight (spherical) is suspended on a spring. During an earthquake, the apparatus moves while the heavy ball remains suspended in mid-air. This causes the pen attached to ball to record a trace on the paper at right. This paper winds onto and off a cylinder that rotates at a constant speed, resulting in a trace (red) of the earthquake's amplitude.

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Keywords: artwork, cylinder drum, decoupled, decoupling, detecting, detection, device, earth science, earth sciences, earthquake, equipment, geological, geology, heavy weight, illustration, lab, laboratory, measurement, pen, record, recording, research, seismological, seismology, seismometer, spring, technological, technology, trace, vibration, vibrations, white background

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