Definition: extraordinary behavior in the curve of refractive index versus wavelength whichoccurs in the vicinity of absorption lines or bands in the absorption spectrum of a medium反常色散fǎn cháng sè sàndispersion: In optics,dispersion is the phenomenon in ...[继续阅读]

    Definition: a change in a diffracting X-rays phase that is unique from the rest of the atomsin a crystal due to strong X-ray absorbance反常散射fǎn cháng sǎn shèscattering: A general physical process where some forms of radiation,such as light,sound,or moving ...[继续阅读]

    Definition: transmission deviating from the normal rule反常透射fǎn cháng tòu shètransmission: the fraction of radiant energy that passes through a substance透射tòu shèExample:It places the stress on analyzing the anomalous transmission valley which occurs in th...[继续阅读]

    Definition: Each side of the boundary has an opposite phase.反相畴界 fǎn xiāng chóu jièantiphase: (Sciences) describing a boundary between an ordered phase and a disordered orrandom phase反相fǎn xiāngboundary: the dividing line or location between two areas界限ji...[继续阅读]

    Definition: Aperiodic crystal is a structure with,ideally,sharp diffraction peaks on thepositions of a reciprocal lattice. The structure then is invariant under the translations of the directlattice. Periodicity here means lattice periodicity. Any structu...[继续阅读]

    Definition: Aphanite,or aphanitic as an adjective,is a name given to certain igneous rockswhich are so fine grained that their component mineral crystals are not detected by the unaidedeye (as opposed to phaneritic igneous rocks,where the minerals are vis...[继续阅读]

    Definition: An aristotype is a high-symmetry structure type that can be viewed as anidealized version of a lower-symmetry structure.珂罗酊氯化银印相法(一种旧式的印相术)kē luó dǐng lǜ huà yín yìn xiāng fǎ...[继续阅读]

    Definition: The arithmetic crystal classes are obtained in an elementary fashion by combiningthe geometric crystal classes and the corresponding types of Bravais lattices. For instance,in themonoclinic system,there are three geometric crystal classes,2,m ...[继续阅读]

    Definition: lack of equality or equivalence between parts or aspects of something; lack ofsymmetry非(不)对称fēi (bú) duì chènOrigin: mid-17th century: from Greek asummetria,from a-“ without” +summetria (seesymmetry)Example:The second part involves voltage con...[继续阅读]

    Definition: In physics,the atomic form factor,or atomic scattering factor,is a measure ofthe scattering amplitude of a wave by an isolated atom. The atomic form factor depends on thetype of scattering,which in turn depends on the nature of the incident ra...[继续阅读]