Zhao Min had the workshop fitters produce twice as many parts, making replacements convenient if any broke. This thoughtfulness pleased Chen Mo somewhat; at least he would have one set of spare parts to choose from.
Once all the parts had been delivered outside Chen Mo's laboratory and the staff had left, Chen Mo had ten robots begin moving the parts and officially started assembly.
"Mo Nv."
"Brother Mo, Mo Nv is here. What do you need my help with?" Mo Nv's childish voice rang out.
Mo Nv's conversations with him were becoming increasingly varied. She was learning constantly, and her intelligence was growing more complex, just as Chen Mo had expected.
"Write a paper on advance earthquake warning. Title it 'Research on Earthquake Early Warning.' Include some of the principles behind making seismometers, but leave out the core principles and seismometer manufacturing technology," Chen Mo said.
Before the troops moved, provisions had to go first. He would publish the paper before officially manufacturing the equipment. Every device needed theory to support it.
Earthquakes were caused by fractures and dislocations in underground rock strata. They existed constantly across the Earth, but their usual vibrations were too weak to be detected. Nearly eight thousand earthquakes below magnitude 2 occurred every day. They were simply too minor to have any impact.
Before an earthquake, underground rocks experienced a "piezomagnetic effect" under geostress, causing localized changes in the geomagnetic field. When underground rocks fractured and shifted, geostress compressed or stretched them, altering their electrical resistance and thereby causing localized changes in the Earth's electromagnetic field.
Moreover, before an earthquake, geothermal heat accumulated, or underground rocks underwent intense friction under strong gravitational forces, generating vast amounts of heat. This heat escaped through the surface, producing geothermal phenomena.
Some earthquake clouds formed because of geomagnetism