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David Milne
David Milne suggests a machine that could measure seismic activity -
Robert Mallet
Developed theories about earthquakes movements -
Grove Gilbert
Discovered that earthquakes usually occur along fault lines -
Seismograph
First U.S. Seismograph installed at Lick University -
Intensity Scale
Giuseppe Mercalli creates the Intensity Scale that measures the damage that may be caused in an earthquake -
Harry Reid
Hypothesized that earthquakes were likely the result of buildup pressure along fault lines. -
Moho Boundary
Andrija Mohorvii discovered that there was a boundary between the earth crust and mantle, naming it the Moho Boundary. -
Richter Scale
Charles Richter creates the Richter scale to measure the intensity of earthquakes