(WHTM) — April 26 is the birthday of Seismologist Charles Richter, co-creator with Beno Gutenberg of the Richter Scale, which measures the intensity of earthquakes. In the early 1930s, the fi… ...

Although the Richter Scale laid the foundation for modern seismology, it is no longer the primary tool scientists use to report an earthquake’s magnitude. Today, researchers use more advanced ...

The scale was developed by Charles Richter in the 1930s, but USGS says it only worked well on certain frequency and distance ranges. Newer scales were created to account for quakes outside of ...

In fact, the Richter scale was replaced in the 1970s by other magnitude scales which are more accurate. Despite the fact that it’s outdated, though, the term is still used often when discussing ...

It is measured on a scale from under one to 10. Here is what the scale looks like: < 2.0: Micro (Micro earthquakes, not felt) 2.0-2.9: Minor (Generally not felt, but recorded) 3.0-3.9: Minor ...

The Richter scale measures magnitude, whereas the MMI scale measures intensity. Here are the magnitude classes, according to the California Earthquake Authority: 3.0 – 3.9 Minor, may be felt.

April 18, 1906: The San Francisco earthquake and fire was a 7.8 on the Richter scale. Feb. 9, 1971 – Sylmar Earthquake measured 6.6 on the Richter scale Jan 17, 1994 – Northridge Earthquake 6.7 ...

The moment magnitude scale, as it is known, replaced one developed by an American seismologist, Charles Richter, that was used until the 1970s. The Richter scale was found to be inaccurate for ...

Using that scale, the U.S.G.S. reported a maximum shake value of just over 6 — or “strong” — near the epicenter on Friday, and that people felt shaking across the region.

In fact, the Richter scale was replaced in the 1970s by other magnitude scales which are more accurate. Despite the fact that it’s outdated, though, the term is still used often when discussing ...