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Number of Results: 39 Search : gravitation

"nongravitational forces" "niruhâ-ye nâgerâneši" (#) Fr.: "forces non-gravitationnelles" The forces of jets from a comet's nucleus that can cause a rocket-like effect and alter a comet's direction of motion slightly. → |

constant of gravitation pâyâ-ye gerâneši (#) Fr.: constante de la gravitation |

Einstein's gravitational constant pâyâ-ye gerâneši-ye Einstein (#) Fr.: constante gravitationnelle d'Einstein The coupling constant appearing in → G is the Newtonian
→ gravitational constant and c the
→ speed of light.→ |

Gaussian gravitational constant pâyâ-ye gerâneši-ye Gauss Fr.: constante gravitationnelle de Gauss The constant, denoted L .
Its value is: ^{3}M ^{-1}T ^{-2}k = 0.01720209895.→ |

gravitation gerâneš (#) Fr.: gravitation 1) The universal phenomenon of attraction between material bodies.
→ Verbal noun of → |

gravitational gerâneši (#) Fr.: gravitationnel Of or relating to or caused by → Adj. of → |

gravitational acceleration šetâb-e gerâneši (#) Fr.: accélération gravitationnelle The acceleration caused by the force of gravity.
At the Earth's surface it is determined by the distance of the object form the center of the
Earth: G is the
→ gravitational constant, and M and R are
the Earth's mass and radius respectively. It is approximately equal to 9.8 m s^{-2}.
The value varies slightly with latitude and elevation.
Also known as the → acceleration of gravity.→ |

gravitational attraction darkešeš-e gerâneši Fr.: attraction gravitationnelle The force that pulls material bodies toward one another because of
→ → |

gravitational collapse rombeš-e gerâneši (#) Fr.: effondrement gravitationnel Collapse of a mass of material as a result of the mutual
→ → |

gravitational constant pâyâ-ye gerâneši (#) Fr.: constante gravitationnelle A fundamental constant that appears in → → |

gravitational contraction terengeš-e gerâneši Fr.: contraction gravitationnelle Decrease in the volume of an astronomical object under the action of a dominant, central gravitational force. → |

gravitational encounter ruyâruyi-ye gerâneši Fr.: rencontre gravitationnelle An encounter in which two moving bodies alter each other's direction and velocity by
mutual → → |

gravitational energy kâruž-e gerâneši Fr.: énergie gravitationnelle Same as → → |

gravitational equilibrium tarâzmandi-ye gerâneši (#) Fr.: équilibre gravitationnel The condition in a celestial body when gravitational forces acting on each point are balanced by some outward pressure, such as radiation pressure or electron degeneracy pressure, so that no vertical motion results. → |

gravitational field meydân-e gerâneši (#) Fr.: champ gravitationnel The region of space in which → → |

gravitational force niru-ye gerâneši (#) Fr.: force gravitationnelle The weakest of the four fundamental forces of nature. Described by
→ → |

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. → |

gravitational interaction andaržireš-e gerâneši Fr.: interaction gravitationnelle Mutual attraction between any two bodies that have mass. → |

gravitational lens adasi-ye gerâneši (#) Fr.: lentille gravitationnelle A concentration of matter, such as a galaxy or a cluster of galaxies, that bends light rays from a background object, resulting in production of multiple images. If the two objects and the Earth are perfectly aligned, the light from the distant object appears as a ring from Earth. This is called an Einstein Ring, since its existence was predicted by Einstein in his theory of general relativity. → |

gravitational lens equation hamugeš-e adasi-ye gerâneši Fr.: équation de lentille gravitationnelle The main equation of gravitational lens theory that sets a relation between the angular position of the point source and the observable position of its image. → |