metastable

listen to the pronunciation of metastable
Englisch - Englisch
Of or pertaining to a physical or chemical state that is unstable or transient yet relatively long-lived
nonequilibrium state that may persist for a very long time
(of physical systems) continuing in its present state of equilibrium unless sufficiently disturbed to pass to a more stable state of equilibrium
A state of pseudo-equilibrium
Possessing a state of pseudo-equilibrium that has a free energy higher than that of the true equilibrium state but from which a system does not change spontaneously
(1) nonequilibrium state of a material with respect to some transition, conversion, or reaction but stabilized kinetically either by rapid cooling or by some molecular characteristics; (2) possessing a state of pseudoequilibrium that has a free energy higher than that of the true equilibrium state
A classical system is metastable if it is above its minimum-energy state, but requires an energy input before it can reach a lower-energy state; accordingly, a metastable system can act like a °stable system, provided that energy inputs (e g , thermal fluctuations) remain below some threshold Systems with strong metastability are commonly described as stable Quantum mechanical effects can permit metastable states to reach lower energies by tunneling, without an energy input; an associated, broader definition of metastable embraces all systems that have a long lifetime (by some standard) in a state above the minimum-energy state
An indeterminate state for a logical system Typically occurs when sample and hold times are not adhered to in devices such as a Bistable and the logic hovers in a transient state for an indeterminate time One of the causes of random failures in digital systems - any asynchronous external event can not with certainty be sampled without the possibility of a Metastable state
metastable isomer
An excited state of an isotope, often having different a spin quantum number (designated with an m)
metastable state
Excited state (see excitation) of an atom, nucleus, or other system that has a longer lifetime than the ordinary excited states and generally has a shorter lifetime than the ground state. It can be considered a temporary energy trap or a somewhat stable intermediate stage of a system of which the energy may be lost in discrete amounts. The many photochemical reactions of mercury are a result of the metastable state of mercury atoms, and radiation from metastable oxygen atoms accounts for the characteristic green colour of the aurora borealis and aurora australis
metastability
An unstable but potentially long-lived state of a system; for example, a supersaturated solution or an excited atom

Soloman's belief that love is necessarily paradoxical issues from his attempt to define it as what Sartre would call a dialectical metastability. Love must therefore be not a state of the union but a never ending conflict of pushing away and pulling together..

metastability
the quality of a physical system that persists in its existing equilibrium when undisturbed (or only slightly disturbed) but able to pass to a more stable equilibrium when sufficiently disturbed
metastability
An unstable but potentially long-lived state of a chemical or physical system; for example, a supersaturated solution or an excited atom
metastable

    Silbentrennung

    met·a·sta·ble

    Aussprache

    Etymologie

    [ -'stA-b&l ] (adjective.) 1897. International Scientific Vocabulary.

    Wort des Tages

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