Portable seismometer in use, 1973
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Portable seismometer in use, 1973
A modern model of Zhang Hengs apparatus for detecting earthquakes. The model is from the Science Museums collections
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Media ID 8578243
© Mary Evans Picture Library 2015 - https://copyrighthub.org/s0/hub1/creation/maryevans/MaryEvansPictureID/10703650
1973 20th Century Earthquake Heng Measure Measuring Technical Technology Seismometer Zhang
EDITORS COMMENTS
This photograph showcases a portable seismometer in use during the 1970s, a modern interpretation of the ancient seismic detection device created by Chinese polymath Zhang Heng in the 132 AD. The antique model on display is part of the Science Museum's extensive collections. Zhang Heng's original seismometer, an engineering marvel of the Han Dynasty, was a complex and intricately designed apparatus that used a large pendulum suspended over a bronze frog statue. When an earthquake occurred, the pendulum would be disrupted, causing the frog's mouth to open, signaling the occurrence of seismic activity. In this photograph, the portable seismometer, an adaptation of Zhang Heng's invention, is being employed by a scientist or engineer in the field. The compact and portable design allowed for greater mobility and flexibility in earthquake detection, making it a valuable tool in the 20th century scientific community. The modern seismometer in the image is a testament to the enduring legacy of Zhang Heng's invention and the continuous advancement of earthquake technology throughout history. This historical artifact serves as a reminder of the ingenuity and curiosity that has driven humanity to measure and understand the natural world around us.
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