関連する実験動画

Updated: Jul 12, 2026

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.
07:32

Monitoring Pedogenic Inorganic Carbon Accumulation Due to Weathering of Amended Silicate Minerals in Agricultural Soils.

Published on: June 4, 2021

ホイットロカイトがコンドリート隕石に存在する

L H Fuchs

    Science (New York, N.Y.)
    |August 10, 1962
    PubMed
    まとめ

    ホイットロカイトという鉱物はコンドライトで発見され,隕石の研究において重要な発見となった. この研究は,新しい証拠に基づいた隕石におけるメリリットの存在についても疑問を投げかけています.

    さらに関連する動画

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction09:13

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

    Published on: April 1, 2017

    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples10:12

    Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples

    Published on: June 19, 2018

    関連する概念動画

    Crystal Field Theory - Octahedral Complexes02:58

    Crystal Field Theory - Octahedral Complexes

    Crystal Field Theory
    To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
    CFT focuses on...
    Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

    Imperfections in Crystal Structure: Non-Stoichiometric Defects

    Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
    Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

    Imperfections in Crystal Structure: Stoichiometric Point Defects

    Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
    Cleavage and Blastulation01:33

    Cleavage and Blastulation

    After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
    X-ray Crystallography02:18

    X-ray Crystallography

    The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
    Diffraction
    Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
    Washing, Drying, and Ignition of Precipitates00:52

    Washing, Drying, and Ignition of Precipitates

    After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...