# Associations to the word «Perturbation»

## Noun

- Orbit
- Eccentricity
- Approximation
- Amplitude
- Neptune
- Trajectory
- Oscillation
- Equilibrium
- Degenerate
- Integral
- Coupling
- Fluctuation
- Instability
- Oscillator
- Comet
- Asteroid
- Jupiter
- Polarization
- Equation
- Duality
- Deviation
- Tensor
- Calculation
- Mechanics
- Theory
- Dyson
- Waveguide
- Optimization
- Parameter
- Subspace
- Resonance
- Saturn
- Cavity
- Velocity
- Spectroscopy
- Stability
- Symmetry
- Correction
- Feedback
- Kepler
- Relativity
- Electron
- Interaction
- Pluto
- Planet
- Dispersion
- Correlation
- Divergence
- Singularity
- Photon
- Raman
- Disturbance
- Relaxation
- Vector
- Hilbert
- Lattice
- Dynamics
- Dipole

## Adjective

- Gravitational
- Orbital
- Invariant
- Dielectric
- Planetary
- Nonlinear
- Periodic
- Quantum
- Chaotic
- Resonant
- Unstable
- Elliptical
- Stochastic
- Primordial
- Gaussian
- Numerical
- Divergent
- Electromagnetic
- Magnetic
- Shielding
- Differential
- Negligible
- Stable
- Scattering
- Solar
- Galactic
- Linear
- Asteroid
- Spectral
- Singular
- Transient
- Climatic
- Angular
- Harmonic
- Quadratic
- Approximate
- Gradient
- Homogeneous

## Wiktionary

PERTURBATION, noun. (uncountable) Agitation; the state of being perturbed

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

PERTURBATION, noun. (countable) (astronomy) (physics) Variation in an orbit due to the influence of external bodies

PERTURBATION THEORY, noun. A mathematical technique for finding an approximate solution to a problem that cannot be solved exactly, by starting from the exact solution of a related problem; used in modelling physical interactions between particles, etc.

## Dictionary definition

PERTURBATION, noun. An unhappy and worried mental state; "there was too much anger and disturbance"; "she didn't realize the upset she caused me".

PERTURBATION, noun. (physics) a secondary influence on a system that causes it to deviate slightly.

PERTURBATION, noun. Activity that is a malfunction, intrusion, or interruption; "the term `distress' connotes some degree of perturbation and emotional upset"; "he looked around for the source of the disturbance"; "there was a disturbance of neural function".

PERTURBATION, noun. A disposition that is confused or nervous and upset.

PERTURBATION, noun. The act of causing disorder.

## Wise words

Every day we should hear at least one little song, read one
good poem, see one exquisite picture, and, if possible,
speak a few sensible words.