Tagged Questions

5
votes
2answers
184 views

Order = Energy = Mass?

Here is a following problem I encountered when chatting about physics with my friend: Let us imagine a classical example of ordered state of matter in thermodynamic sense: let's take a cylinder ...
2
votes
0answers
130 views

Entropy of a de Sitter horizon

The cosmological event horizon found in a de Sitter universe has some interesting similarities to that of a black hole. For example, since we can find a temperature at the horizon, we are able to use ...
1
vote
0answers
44 views

What other factors effect the ability of a propigating field of pressure in a gaseous medium to predict gravitational collapse?

What other factors effect the ability of a propigating field of pressure in a gaseous medium to predict gravitational collapse? Will the only factor influencing the Speed of Sound in this medium be ...