Seismometer. Illustration of a type of seismometer, a device used to record the strength of earthquakes. This one operates on the laser interferometry

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Seismometer. Illustration of a type of seismometer, a device used to record the strength of earthquakes. This one operates on the laser interferometry principle. Laser beams are bounced back and forth between a set of prisms, with the interference between the beams allowing changes in the beam length caused by an earthquake to be measured. This gives a measure of the strength of the earthquake.

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Size: 3661px × 2929px
Photo credit: © CLAUS LUNAU/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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