in fluid mechanics, state in which compression due to gravity is balanced by a pressure gradient which creates a pressure gradient force in the opposite direction
Diagram of a newly formed planet in a state of hydrostatic equilibrium
In fluid mechanics, hydrostatic equilibrium, also called hydrostatic balance and hydrostasy, is the condition of a fluid or plastic solid at rest, which occurs when external forces, such as gravity, are balanced by a pressure-gradient force. In the planetary physics of Earth, the pressure-gradient force prevents gravity from collapsing the atmosphere of Earth into a thin, dense shell, whereas gravity prevents the pressure-gradient force from diffusing the atmosphere into outer space. In general, it is what causes objects in space to be spherical.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).