The incredible 2000-year-old earthquake detector

Μια πυξίδα, 8 δράκοι, 8 βατράχια και ένα δοχείο αξιόπιστα μετρούσαν τους σεισμούς 2.000 χρόνια πριν

Although we still cannot accurately predict earthquakes, we have come a long way in detecting, recording, and measuring seismic shocks.

earthquake-detector-ancient

Many don’t realise that this process began nearly 2000 years ago, with the invention of the first seismoscope in 132 AD by a Chinese astronomer, mathematician, engineer, and inventor called Zhang (‘Chang’) Heng.

The device was remarkably accurate in detecting earthquakes from afar, and did not rely on shaking or movement in the location where the device was Continue reading