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Number of Results: 22 Search : instability

baroclinic instability nâpâydâri-ye fešâršibi Fr.: instabilité barocline 1) A type of instability occurring within a rapidly → → |

barotropic instability nâpâydâri-ye fešârgard Fr.: instabilité barotrope A hydrodynamical instability that arises when the horizontal
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disk instability nâpâydâri-ye gerdé, ~ disk Fr.: instabilité de disque 1) → |

disk instability model (DIM) model-e nâpâydâri-ye gerdé, ~ ~ disk Fr.: modèle d'instabilité de disque A model describing → → |

fingering instability nâpâydâri-ye angoštvâr Fr.: instabilité à traines A type of instability that often occurs in fluids which are thermally
stably stratified, but have an inhomogeneous composition.
A well-known example, found in upper layers of the Earth's oceans, is
→ → |

gravitational instability nâpâydâri-ye gerâneši (#) Fr.: instabilité gravitationnelle The process by which fluctuations in an infinite medium of size greater than a certain length scale (the Jeans length) grow by self-gravitation. → |

instability nâpâydâri (#) Fr.: instabilité The condition of a system when it is disturbed by internal or external forces. The system continues to depart from the original condition, in contrast to a stable system, which will return to its previous condition when disturbed. |

instability strip navâr-e nâpâydâri Fr.: bande de l'instabilité A narrow, almost vertical, band on the right hand side of the
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Jeans instability nâpâydâri-ye Jeans Fr.: instabilité de Jeans An instability that occurs in a → → |

Kelvin-Helmholtz instability nâpâydâri-ye Kelvin-Helmholtz (#) Fr.: instabilité de Kelvin-Helmholtz An → |

linear instability nâpâydâri-ye xatti (#) Fr.: instabilité linéaire An instability that can be described (to first-order accuracy) by linear (or tangent linear) equations. → |

magnetorotational instability (MRI) nâpâydâri-ye meqnâtocarxeši Fr.: instabilité magnétorotationnelle An instability that arises from the action of a weak →
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nonlinear instability nâpâydâri-ye nâxatti Fr.: instabilité non-linéaire The instability of a physical or mathematical system that arises from the nonlinear nature of relevant variables and their interactions within the system. → |

pair instability nâpâydâri-ye joft Fr.: instabilité de paire An instability arising from the → → |

pair-instability nâpâydâri-ye joft Fr.: instabilité de paire → |

pair-instability supernova abar-now-axtar-e nâpâydâri-ye joft Fr.: supernova à instabilité de paires A special type of → → |

Parker instability nâpâydâri-ye Parker Fr.: instabilité de Parker A type of instability found in some astrophysical phenomena involving
→ First studied by E. N. Parker, 1966, ApJ 145, 811;
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pulsational instability nâpâydâri-ye tapeši Fr.: instabilité pulsationnelle A term used to describe irregularly spaced, fine-scale structure in optically thick rings. The process relies on a combination of viscosity and self-gravity of ring material to produce this fine structure. Also known as overstability (Ellis et al., 2007, Planetary Ring Systems, Springer). → |

pulsational pair-instability supernova abar-now-axtar-e nâpâydâri-ye tapeši-ye joft Fr.: supernova à instabilité pulsationnelle de paires A → → |

Rayleigh-Taylor instability nâpâydâri-ye Rayleigh-Taylor Fr.: instabilité Rayleigh-Taylor A type of hydrodynamical instability between two fluids of different densities, which occurs when the heavy fluid lies above the lighter fluid in a gravitational field. More generally a material interface is said to be Rayleigh-Taylor unstable whenever the fluid acceleration has an opposite direction to the density gradient. → |