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Number of Results: 95 Search : law

additive law of probability qânun-e bardâyeši-ye šavânâyi Fr.: loi additive de probabilité If n → mutually exclusive
events, then the probability of occurrence
of at least one of them is the sum of their individual probabilities:
P(E._{1} + E_{2} + ... + E_{n}) =
P(E_{1}) + P(E_{2}) + ... + P(E_{n})→ |

Ampere's law qânun-e Âmper Fr.: loi d'Ampère, théorème ~ One of the basic relations between → |

associative law qânun-e âhazeši Fr.: loi associative In mathematics, the rule that states that the result of two identical operations is independent of the sequence of these operations. For ex., in the addition operation, a + (b + c) = (a + b) + c = a + b + c. Multiplication of numbers is also associative. → |

Avogadro's law qânun-e Avogâdro (#) Fr.: loi d'Avogadro A statement according to which equal volumes of different gases contain an equal number of molecules under the same conditions of temperature and pressure. After Amedeo Avogadro (1776-1856), Italian chemist and physicist, who advanced the hypothesis in 1811. |

barometric law qânun-e fešârsanji, ~ fešârsanjik Fr.: loi barométrique A law which describes the vertical pressure distribution in the lower parts of Earth's atmosphere. The atmospheric pressure decreases exponentially from any reference surface as the altitude increases. |

Biot-Savart law qânun-e Biot-Savart (#) Fr.: loi de Biot-Savart The → Named after the French physicists Jean-Baptiste Biot (1774-1862) and
Félix Savart (1791-1841); → |

Bode's law qânun-e Bode Fr.: loi de Bode |

Boyle-Mariotte law qânun-e Boyle-Mariotte (#) Fr.: loi de Boyle-Mariotte In a → After Robert Boyle (1627-1691), an Irish philosopher, chemist, and physicist,
and Edme Mariotte (1620-1684), a French physicist and pioneer of neurophysiology,
who discovered the law independently, the first one in 1662 and the second one in
1676; → |

Bragg's law qânun-e Bragg Fr.: loi de Bragg A parallel beam of monochromatic X-rays of wavelength λ, incident on a given
set of parallel crystal planes at a grazing angle θ will give rise to a
reflected beam whenever: Named after William Lawrence Bragg (1890-1971), British physicist,
who, in collaboration with his father, William Henry Bragg (1862-1942),
joint Nobel Prize in Physics 1915, pioneered X-ray analysis and spectrometry;
→ |

Brewster's law qânun-e Brewster Fr.: loi de Brewster The amount of the polarization of light reflected from a
surface is a maximum when the reflected ray is at right angles to the
refracted ray. See also → Named after Sir David Brewster (1781-1868), Scottish physicist; → |

Cassini's law qânun-e Cassini Fr.: loi de Cassini Any of the three empirical laws governing the rotational dynamics of the
→ Named after Jean-Dominique Cassini (1625-1712), French astronomer of Italian origin,
who established these laws in 1693 ( |

Charles' law qânun-e Charles (#) Fr.: loi de Charles The volume of a fixed mass of any gas increases for each degree rise in temperature by a constant fraction of the volume at 0° C, the pressure being constant throughout. Named after Jacques Charles (1746-1823), French physicist, who first discovered the law, and who was responsible for the first balloon ascents using hydrogen. |

clustering law qânun-e xušé bandi Fr.: loi de groupement An empirical power-law representing the number of stellar clusters as a function
of the number of stars per cluster within an interval. It is expressed as:
N(N is the number of clusters containing _{*})N stars and
_{*}dN is the interval in star number. It is believed that this relationship
applies to a variety of systems, including stellar clusters, globular clusters,
H II regions (Oey et al. 2004, AJ 127, 1632)._{*}→ |

commutative law qânun-e âmuteši Fr.: loi commutative A principle holding for the operations of addition and multiplication
(in some number domains) that asserts that the consequence of the
given operation is not affected by the order in which the terms are
considered. Thus → |

conservation law qânun-e patâyeš Fr.: loi de conservation A general statement that a → → |

Coulomb's law qânun-e Coulomb (#) Fr.: loi de Coulomb The electrical force between two charged objects is directly proportional to the product of the quantity of charge on the objects and inversely proportional to the square of the separation distance between the two objects |

de Vaucouleurs law qânun-e de Vaucouleurs Fr.: loi de Vaucouleurs A mathematical expression describing the → → |

Debye law qânun-e Debye (#) Fr.: loi de Debye The → T^{3}. |

distributive law qânun-e vâbâžš Fr.: loi distributive
→ |

Dulong-Petit law qânun-e Dulong-Petit Fr.: loi de Dulong et Petit The product of the → Named after Pierre L. Dulong (1785-1838) and Alexis T. Petit (1797-1820),
French chemists, who proposed the law in 1819. They
collaborated in several important investigations, including studies of
thermal expansion of gases and of liquids and the specific heats of substances;
→ |