'A 1 on the Mercalli scale or below a 3 on the Richter scale is only measurable by these devices'
seismographs
SIMPLE SCIENCE: A 1 on the Mercalli scale or below a 3 on the Richter scale is only measurable by these devices
A 1 on the Mercalli scale or below a 3 on the Richter scale is only measurable by these devices
A 1 on the Mercalli scale or below a 3 on the Richter scale is only measurable by these devices
SIMPLE SCIENCE
seismographs
SIMPLE SCIENCE