ground state


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state

 [stāt]
condition or situation.
alpha state the state of relaxation and peaceful awakefulness associated with prominent alpha brain wave activity.
anxiety state the condition of experiencing undue anxiety, as in anxiety disorders.
excited state the condition of a nucleus, atom, or molecule produced by the addition of energy to the system as the result of absorption of photons or of inelastic collisions with other particles or systems.
ground state the condition of lowest energy of a nucleus, atom, or molecule.
persistent vegetative state a condition of profound nonresponsiveness in the wakeful state caused by brain damage at whatever level and characterized by a nonfunctioning cerebral cortex, the absence of any discernible adaptive response to the external environment, akinesia, mutism, and inability to signal; the electroencephalogram may be isoelectric or show abnormal activity. Vegetative states raise ethical questions regarding appropriate care, use of resources, and allowing a patient to die.
refractory state a condition of subnormal excitability of muscle and nerve following excitation.
resting state the physiologic condition achieved by complete bed rest for at least 1 hour.
steady state dynamic equilibrium.

ground state

the normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived.

ground state

(grownd stāt)
The normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived.

ground state

the condition of a molecule when at its lowest energy level.

ground state

(grownd stāt)
The normal, inactivated state of an atom from which, on activation, the singlet, triplet, and other excited states are derived.
References in periodicals archive ?
The presence of the off-axis donor in circular QR also breaks the central symmetry [C.sub.[infinity]] of the structure, resulting in the localization of the electron in the ground state and the formation of a nonvanishing energy gap between two lowest levels.
Based on the slightly different ground state properties, for each of the exchange-correlation functionals, the electronic band structures have been calculated and are shown in Figure 3.
In Figure 1 are shown the two sequential radical reactions that lead from the ground state of the reactants V([sup.4]F) + S[O.sub.2] to the products observed for this interaction under matrix-isolation conditions, mainly the oxide OV([[eta].sub.2]-SO) and the sulfide oxide SV[O.sub.2] compounds [17].
A solution of (2) is called a ground state solution if (u, v) [member of] M and E(u, v) = M.
Comparing the curves from Figure 9 with those in Figure 5(c) for zeroelectric-field case one can observe that in the presence of the external electric field, independently on its direction, amplitudes of the ground state energy oscillation grow in both cases, but periods of the oscillation, [DELTA][gamma] for positive and negative electric fields, become essentially different.
At present time, many radial excitations of the mesons and baryons which carry the same spin-parity quantum numbers as the ground states are observed in experiments [1].
Ground State CdO Properties Present work Experimental Previous work [14] theoretical work [15] [a.sub.o] a.u.
It has been proposed [14] that the singlet excimer state is a precursor to the photodimerization of DNA bases and the excited state dimerization reaction occurs in competition with an internal conversion to the electronic ground state of nucleobases.
If the ground state electron is 'spin down', then the excited electron can make the transition back to the ground state if it is 'spin up'.
All the ground state structures of the [Ni.sub.2][Al.sub.6], [Ni.sub.2][Al.sub.7], and [Ni.sub.2][Al.sub.9] clusters have the same [C.sub.2v] symmetry.
The potentially explosive stuff of science fiction, has been created and stored in a stable long-lasting "ground state" state for the first time.
The goal: to reach the ground state, where an object no longer possesses any packets, or quanta, of vibrational energy.