noun

definition

Agitation; the state of being perturbed

definition

A small change in a physical system, or more broadly any definable system (such as a biological or economic system)

definition

Variation in an orbit due to the influence of external bodies

Examples of perturbation in a Sentence

After various remodellings, and amid much perturbation, secession, violent reproach, the Household Suffrage Bill passed in August 1867.

We now use matrix perturbation theory to compute the covariance of based on this zero approximation.

The accuracy of the perturbation expansion is analyzed in detail by the discussion of an exactly solvable model.

On what time scale does the seismic perturbation of the erosion signal decay?

To some extent, the experimenter can check for potential errors by referring to the perturbation of the field seen by local ground-based magnetometers.

In [6] we gave a way of handling " negative resonances " by introducing a first order perturbation.

These two models can be distinguished by considering the ratio of the magnetic field perturbation to the electric field.

The density of states at the surface is calculated within the GW approximation of many-body perturbation theory.

For example, the summation of divergent series is of great importance in the large order perturbation theory of quantum mechanical systems.

For this to be achieved a rigourous one-loop calculation based on a self-consistent perturbation expansion is needed.

The idea is to take advantage of what a random perturbation of the representative phase point would do to the evolution of a system.

These teachers, genuinely touched with a sense of the scantiness of our knowledge, of our confidence in abstract terms, of the insecurity of our alleged "facts," case-histories and observations, alienated from traditional dogmatisms and disgusted by meddlesome polypharmacy - enlightened, moreover, by the issue of cases treated by means such as the homoeopathic, which were practically "expectant" - urged that the only course open to the physician, duly conscious of his own ignorance and of the mystery of nature, is to put his patient under diet and nursing, and, relying on the tendency of all equilibriums to recover themselves under perturbation, to await events (Vis medicatrix naturae).

We now use matrix perturbation theory [7] to compute the covariance of based on this zero approximation.

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