ground state


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

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

1 the lowest energy level of a physical system. See also fatigue state.
2 the stable form of an atom or molecule.

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.

ground state,

n the state of a nucleus, an atom, or a molecule when it has its lowest energy. All other states are termed
excited.

state

condition or situation.

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.
refractory state
a condition of subnormal excitability of muscle and nerve following excitation.
resting state
the physiological condition achieved by complete rest for at least 1 hour.
steady state
dynamic equilibrium.
References in periodicals archive ?
baryon is the ground state of the three sss quarks and each of the baryons of the decuplet has an antisymmetric space-spin wave function.
There are, in the literature, a great number of studies and estimates for the ground state energy of molecular hydrogen.
Fplf[alpha]] is the electronic optical transition matrix element between the ground state labeled by Fplf[alpha] and the exc ited state labeled by F'p'[beta].
If the universe as a whole is a quantummechanical system like an atom and is in its ground state, then, according to Hawking, it no longer needs a singularity at the beginning, and the centers of black holes are no longer singularities but little separate universes connected to ours by passages that topologists call wormholes.
To prepare atoms for a beauty shot, researchers use a laser pulse to drive about 10,000 strontium atoms from their low-energy ground state to a high-energy, excited state.
The reason why the atom "dies," that is it returns to its original ground state, is that it sees the very small variations in the electromagnetic field which must exist due to quantum theory, known as vacuum fluctuations," says GE[micro]ran Johansson, Professor of Theoretical and Applied Quantum Physics and leader of the theory group.
Stem cells exist in a ground state before something triggers them to become develop into functional cells such as liver, heart or blood cells.
Since 1967, the SI second has been defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.
A goal of our research is to convert this transition state to a homoaromatic ground state.
Proprietary combinations of small molecule modulators, which include ROCK, GSK3 and MEK pathway inhibitors, used in the culture systems were found to be critical in promoting characteristics of the ground state of pluripotcncy including pluripotent culture stability, homogeneity and survival.
the mass gap, which "is in principle responsible for the large-scale structure of the QCD ground state, and thus for its non-perturbative phenomena at low energies") rather than other massive particles.
All quantum mechanical systems undergo fluctuations even in their ground state and have an associated zero-point energy, a consequence of their wave-like nature.