Thus, the state of relatively stable or metastable equilibrium
is defined as the state in which a system remains for a long period of time, and any slight disturbance causing the system to deviate from the metastable state does not result in the system passing into another state.
 measured volume change in an epoxy during structural recovery with asymmetric plasticizer jumps, the asymmetric jumps led to the epoxy aging to a new metastable equilibrium
state, however with asymmetric temperature jumps the epoxy ages approaching the same equilibrium state as the quenched epoxy.
So the bubble chambers were commanded by the beam passage and the used liquid reached a metastable equilibrium
state which occurs when the pressure of the liquid was lowered adiabatically: the substance remains in the liquid state despite the vapor pressure or the boiling point temperature.
Nonetheless, a carefully determined phase diagram is still a useful representation of equilibrium, even though portions may represent metastable equilibrium
. In situations where phases have been reported in the literature, but are not present on the phase diagram, the possibility of metastable equilibria should be considered.
Alterations of this metastable equilibrium
are undoubtedly related with temperature changes, but mainly with variations in the relative humidity imposed by the surrounding environment.
In mechanics, this situation is usually referred to as a "metastable equilibrium