What tool do Seismologist use to measure earthquakes?
The tool that Seismologists use is called a seismograph is a tool that measures transverse and converse waves. These waves are what cause earthquakes, and are measured using the Richter scale. Most up to date seismographs work electromagnetically. A big magnet is used for the mass and the outside case has many windings of fine wire. Movements of the case relative to the magnet create small electric signs in the wire coil. These signals are then amplified electronically and showed on a computer or played out on a recording drum called a seismogram. The seismograph was created by four Greek men that go by the names James Alfred Ewing, Luigi Palmieri, John Milne, and Thomas Lomar Gray.