UML State Machine Diagram Example
This is an example of water phase diagram represented as UML state machine diagram
Water can exist in several states - liquid, vapor, solid, and plasma. Several transitions are possible from one state to another. For example, freezing is phase change from liquid state to ice. Condensation is phase change from vapor state to liquid. Water vapor could turn directly into frost through deposition.
UML State Machine Example - Water Phase Diagram
https://www.uml-diagrams.org/examples/water-phase-uml-state-machine-diagram-example.html