excited 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.

ex·cit·ed state

the condition of an atom or molecule after absorbing energy, which may be the result of exposure to light, electricity, elevated temperature, or a chemical reaction; such activation may be a necessary prelude to a chemical reaction or to the emission of light.
Synonym(s): activated state

excited state

[eksī′tid]
Etymology: L, excitare, to rouse, status
(in chemistry and physics) an energy level of a system that is higher than the ground state. The system decays to the ground state and emits the energy difference, usually in the form of photons.

ex·cit·ed state

(ek-sī'tĕd stāt)
The condition of an atom or molecule after absorbing energy, which may be the result of exposure to light, electricity, elevated temperature, or a chemical reaction; such activation may be a necessary prelude to a chemical reaction or to the emission of light.

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 ?
Hydrogen Bonding and Transfer in the Excited State is an essential overview of this increasingly important field of study, surveying the entire field over 2 volumes, 40 chapters and 1200 pages.
Theorists had incorrectly expected that electrical interactions between so many electrons would thoroughly scramble the quantum states, washing out the possibility of strong correlations between ground and excited states of quantum dots with different numbers of electrons.
It tells us that the very basic biological process of sensing light depends on femtosecond changes in a molecule's excited state.
The researchers can ascertain the existence of a particular photon-number state by looking for sequences in which each atom emerges from its interaction in an excited state.
Such a structure would prevent an excited atom embedded within it from spontaneously emitting a photon, in effect greatly prolonging the time an atom could spend in an excited state.
It happens that a molecule can stay in the higher excited state for a long time, which allows the molecule time to absorb, say, ultraviolet radiation to reach an even more excited state.
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 Examiner reported: "The impulse to shout apparently restored his speech at once and although he was in a somewhat excited state he was able to converse freely afterwards.
Hackles raised means an adrenaline surge, which means he is in an excited state.
The photosensitizer can be activated to singlet excited state by visible light absorption and then partial excited-state molecules convert into longer-lived triplet state through intersystem crossing.
These paths may proceed through the formation of radical and triplet electronic states, oxidation of the excited state, etc.
Every year we see problems at the start because of the horses being in this excited state.