Seismometer(Earthquake Measuring Device)

A seismometer is a device that reacts to ground movements, such as earthquakes, volcanic eruptions, and eruptions. Seismometers are usually combined with a timing device and a recording device to produce a seismograph.
 Seismometer
A device used to detect and record earthquakes. Generally, it has a mass attached to a fixed base. During an earthquake, the base moves and does not mass. The base speed is usually changed to electrical voltage with respect to mass. Electrical voltage is recorded on paper, magnetic tape, or any other recording medium. This record is proportional to the speed of the seismic mass relative to the Earth, but can be mathematically converted into a record of the absolute speed of the ground. Seismograph usually refers to the seismometer and its recording device as a unit.

Earthquake  Scale(Richter magnitude scale)

The Richter Scale - also known as the Richter Magnitude Scale or Richter's Magnitude Scale - is a measure of earthquake strength, developed by Charles F. Richter and presented in his Landmark 1935 paper, where he called it the "Magnet Scale "Said.
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Top  Earthquake in Last 5 year 

list of earthquake

 2019 Peru Earthquake
 2019 Peru Earthquake

On May 26, 2019, local time, earthquake measuring 8.05 in the morning and measuring earthquake in Peru and surrounding areas. This was the maximum perceived intensity of VIII on the modified Mercalli intensity scale. Two people died and another 30 were injured. It was the strongest earthquake worldwide in 2019.

2018 Sulawesi earthquake and tsunami
2018 Sulawesi earthquake and tsunami

On September 28, 2018, a shallow, major earthquake struck the Minashas Peninsula of Indonesia, with its epicenter located in Dongagala Regency, Central Sulawesi.

2017 Puebla earthquake

The 2017 Puebla earthquake struck at 13:14 CDT (18:14 UTC) on 19 September 2017 with an estimated magnitude of Mw7.1 and strong shaking for about 20 seconds.

2016 papua earthquake
2016 papua earthquake

On December 17, 2016, at 10:51:12 BTC, a 7.9 magnitude earthquake struck offshore the island of New Ireland, Papua New Guinea. ... USGS operates 24/7 National Earthquake Information Center in Colorado which can be accessed for more information.   
 
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