HIST 1080 Lecture Notes - Lecture 8: Robert Mallet, Seismology, Epicenter
Document Summary
History 1777: kant; underground fire and explodes when the pressure can no longer hole, electrical matter and moves like veins and hold pockets and cause earthquakes, pombal sends a 13 question survey about the earthquake. The earthquake allows for govt to gain more control through info. There is no single way to answer and understand an earthquake. They come up with table to understand earthquakes; weak to very strong: robert mallet; civil engineer; fascinated by earthquakes, experiements with gun powder tom mimic earthquakes, carries experiments to understand how quickly they spread, measured by stopwatches. Isoseismal a line that detonates equal intensity on a map. The intensity is the same in the isoseismal no matter where u stands: measures damages from point to point and came to the isoseismal conclusion, earthquakes are clustered, the ring of re. #1: magnitude: objective, measured using scienti c instrument,seismometers. Wednesday, october 11, 2017: seismometers: registers vibrations through writing.