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ground state

ground state

1 6.1
The lowest energy level that an atom or particle can have
  • noun
  • /ɡraʊnd steɪt/
  • Specialized
translation icon : estado fundamental
  • In a hydrogen atom, the ground state occurs when the electron is in the lowest energy level.
  • ground state energy
  • ground state hyperfine
  • ground state electron

Even if that magnetic field is very small, the ground state still has a definite orientation.

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Examples

  • The atom passes from the ground state resonantly through virtual intermediate states to this final state.

    Academic text (1995)
  • We see that the interaction increases the ground state energy of the two-electron system.

    Academic text (1994)
  • The transition here down to the ground state is very slow.

  • Indeed, such isomers can live longer than their ground states.

    Academic text (2006)
  • Now relative to the ground state, it's just Omega N.

  • The laws of physics are invariant, and the ground state of the theory, the vacuum, is unique and symmetric.

    Academic text (1995)
  • The first applications to small iron structures found both collinear and noncollinear ground states, depending on the cluster size.

    Academic text (1999)
  • The usual procedure is to compute the energies of each competing structure to identify the ground state.

    Academic text (1999)
  • In an ideal gas, Bose-condensed atoms would all occupy the same single-particle ground state wavefunction.

    Academic text (1999)
  • Recently, a number of ingenious methods have been proposed for evaluating the ground-state energy in O(N) operations.

    Academic text (1999)

How High

energy level
  • Specialized
4 4.5
ground state
  • Specialized
1 6.1

Surface Forms

ground state singular
ground states plural

Morphology

ground + state

The compound is partly compositional: 'ground' conveys a base/fundamental sense and 'state' means condition, so a learner can infer a basic or baseline condition. However the technical nuance 'lowest energy state' is specialized physics jargon not fully predictable from the everyday senses of the constituents, so the exact meaning may not be clear to a B1 learner without exposure.

Etymology

Ground state uses a simple image: ground is the lowest place and state means a condition. So an atom in the ground state is in its 'lowest energy' condition and is calm and stable.