The Richter SCALE is a logarithmic SCALE used to measure the magnitude of earthquakes. It was developed by Charles F. Richter in 1935 and is still used today to measure the intensity of seismic activity. The SCALE ranges from 0 to 10, with each number representing an increase in magnitude by a factor of 10. Earthquakes with a magnitude of 7 or higher are considered major earthquakes, while those with a magnitude of 8 or higher are considered great earthquakes.