![Making Artificial Earthquakes with a Four-Tonne Steel Ball](https://hight3ch.com/wp-content/uploads/2018/02/making-artificial-earthquakes-wi-800x440.jpg)
In Göttingen, Germany, there’s a four-tonne steel ball that can be raised up a 14-metre tower — and then dropped in less than two seconds, crashing back to earth. It makes tiny, artificial earthquakes: here’s why.
In Göttingen, Germany, there’s a four-tonne steel ball that can be raised up a 14-metre tower — and then dropped in less than two seconds, crashing back to earth. It makes tiny, artificial earthquakes: here’s why.