x 9 x 0 x 5 x 1Click icons to use

In A.D. 130, Zhang Heng, an astronomer and literary scholar, invented the first instrument for monitoring :

In A.D. 130, Zhang Heng, an astronomer and literary scholar, invented the first instrument for monitoring :
  • Hurricanes
  • Tsunamis
  • Earthquakes
  • Volcanos