How a seismologist turned earthquake data into sound
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In the 1930s, seismologist Victor Hugo Benioff developed a new instrument, the strain seismometer, that allowed people to hear earthquakes as sound at the California Institute of Technology in Pasadena, California.
Benioff began his career in astronomy but combined his scientific work with a passion for music, seeking to understand both fields. He improved existing seismometers, which had limited sensitivity, by experimenting with electromechanical sensors and, in 1932, invented the strain seismometer.
This instrument worked by measuring tiny changes in the Earth’s surface, converting vibrations into electrical signals. Benioff’s work wasn’t limited to detecting earthquakes, the sensitive instruments also picked up sounds from ocean waves, storms, traffic, and even sunrises. He learned to distinguish the signals of earthquakes from these other sources of noise, effectively “listening” to the Earth. Benioff then applied his understanding of converting physical energy into electrical energy to musical instruments.
He patented designs for electric violins and cellos in 1938, and a concert at Caltech featured instruments he called a “seismographic fiddle.” He continued to refine these technologies, even working on electric pianos and collaborating with pianist Rosalyn Tureck, ultimately aiming to connect technology and human culture. He used his instruments to record the largest earthquake ever recorded, in Chile in 1960.
