Fr.: fractionnement isotopique
Same as → isotope fractionation.
Fr.: nombre isotopique
The difference between the number of neutrons in an isotope and the number of protons. Neutron excess.
Fr.: rapport isotopique
The relative abundances of two isotopes of a given chemical element, such as D/H (deuterium/hydrogen), (carbon) 12C/13C, and (uranium) 235U/238U.
spin-e izotopi (#), izospin (#)
Fr.: spin isotopique
Same as → isospin.
Any of molecular entities which differ in their isotopic composition but retain the same → chemical elements, e.g. H2O and HDO.
Any of → isomers having the same number of each isotopic atom but differing in their positions. For example, CH3CHDCH3 and CH3CH2CH2D are a pair of isotopomers.
Short for isotopic isomers.
izogard, hamsângard (#)
Having physical properties that do not vary with direction.
giti-ye izogard, ~ hamsângard (#)
Fr.: Univers isotrope
A Universe having observed properties that appear identical in every direction.
izogardi, hamsângardi (#)
The property by which physical properties are equal along all directions. → anisotropy.
Isotropy, noun of → isotropic.
1) borunây; 2) borunâyidan
Fr.: issue, question, problème
1a) A result or outcome of something.
M.E., from O.Fr. issue "a way out, a going out, exit; final event," from L. exire "to go out, go forth; become public; flow, pour forth," from → ex- "out," + ire "to go,"
Iterate "to do again, repeat," back-formation from iteration, from L. iterationem (nom. iteratio) "repetition," noun of action from iterare "to do again, repeat," from iterum "again, for the second time;" cf. Skt. itara- "the other (of the two), another."
Itaridan, from L. iter(um), Skt. itar(a-), as above, and Pers. dialects Kâšâni (Voništun) târ "the other;" Kurd. tir "the other" + -idan Pers. infinitive suffix.
A computational process involving a succession of approximations, which consists of repeating the operation by inputting the outcome of each preceding operation to improve the final result until a desired accuracy is achieved. Compare → repetition.
Verbal noun of → iterate.
Fr.: méthode itérative
A method of computation in mathematics using → iteration.
Izar (ε Boötis)
A bright giant star in the constellation → Boötes lying 210 light-years away. It is a close double consisting of K0 and A0 dwarfs of magnitudes 2.5 and 4.6.
From Ar. Al-Izâr (