Re: The antics of thermodynamics, the depravity of relativity, the bunkum of quantum

On 3/11/25 5:04 AM, Richard Heathfield wrote:

 On 11/03/2025 09:23, Peter Moylan wrote:
 

Deep underground, the pressure is so high that no voids can
exist. No caves, so no journey to the centre of the earth.

That can't be right. I read a book about just such a journey. *Clearly* you don't know what you're talking about!
 

Pressure at the center of Earth is about 3.7 million atmospheres! You can guesstimate it by using the main three approximate densities involved:
basalt: 5 grams/cc
liquid iron: 11 grams/cc
solid iron: 13 grams/cc
The top part, basalt, is about 3000 km thick.
The middle part liquid iron is about 2000 km thick.
The core solid iron is about 1500 km radius.