I Felt by very few people; barely noticeable. II Felt by a few people, especially on upper floors. III Noticeable indoors, especially on upper floors, but may not be recognized as an earthquake. IV ...

The Mercalli scale was designed to do just that The original scale was invented by Giuseppe Mercalli in 1902 and was modified by Harry Wood and Frank Neumann in 1931 to become what is now known as the ...

Did you feel that? Impact of Richter Scale inventor and Ohio native Charles Richter still being felt on 125th birthday in ...

the inventor of the Richter Scale. The seismologist, aka Earth scientist, invented the critical measurement tool to help better understand the magnitude of earthquakes. Who is Charles Richter?