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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lunau, Claus |
Bildgröße: | 2860 px × 3154 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |