تشریح ساده زلزله

What's the difference between

an oscillatory and a trepidatory earthquake?

1. This calculation is just for engineers:




2. And this one is for those ignorant --like you and me:

This is a trepidatory earthquake:



This is an oscillatory earthquake:


And this is a combination of both: (trepidatory and oscillatory)




Science is beautiful when it is well explained..