How would you tell a tin-hat that pic related isn't possible?
I need to explain this to a *very* simple minded friend.
Earthquakes. We can measure P waves propagating through some sections of the earth, it's also how we initially confirmed that there was a dense metal core and the density of the core. I think we've recently recalculated the density but that's irrelevant.
Take a look at the p wave shadow zone for a better understanding, it's the yellowish last figure.
I'd be interested to hear the flat earth theory on earthquake detection if anyone has one.
The op image is slander made by a dirty ball earther.
Antarctica surrounds us and goes on forever. There is no edge.
most of you cannot simply imagine the depth of real stupidity. if you can convince a dog of your argument, so stoopid should follow too.
if not, just do as you would with dog, shoot him.