In 1909, an Iranian telegraph operator living in the remote desert town of Kerman noticed an unusual movement of the magnetic needle of his telegraph instrument. While other telegraph operators during the late 1800s and early 1900s noticed the phenomenon, the Iranian telegraph operator proposed an earthquake early warning system.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/s...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/s...