Crystallography def

  • Types of crystallography

    Crystallography is the study of atomic and molecular structure.
    Crystallographers want to know how the atoms in a material are arranged in order to understand the relationship between atomic structure and properties of these materials..

  • Types of crystallography

    High temperature (the torch flame) Page 4 Crystallography is the experimental science of the arrangement of atoms in solids.
    The word "crystallography" derives from the Greek words crystallon = cold drop / frozen drop, with its meaning extending to all solids with some degree of transparency, and grapho = write..

  • Types of crystallography

    ​a scientist who studies and works with crystals..

  • What Crystallographer means?

    ​a scientist who studies and works with crystals..

  • What is the meaning of crystallography?

    crystallography, branch of science that deals with discerning the arrangement and bonding of atoms in crystalline solids and with the geometric structure of crystal lattices.
    Classically, the optical properties of crystals were of value in mineralogy and chemistry for the identification of substances..

Histoire

Le cristal, d'abord simple objet de curiosité, passionna les collectionneurs avant d'intriguer les savants qui, en étudiant sa structure

Les bases

La matière solide est composée d' atomes, que l'on peut voir comme des boules élémentaires

Le cristal parfait et la maille élémentaire

Le « cristal parfait » est un modèle utilisé pour représenter la structure de la matière cristalline

Symétrie

Un réseau est un ensemble de points ou « nœuds » en trois dimensions qui présente la propriété suivante : lorsque l'on se translate dans

Les indices de Miller

Haüy a défini des indices (P, Q, R) qui permettent de repérer dans l'espace les faces d'un cristal. Miller, pour simplifier

What is the online dictionary of Crystallography (ODC)?

Gervais Chapuis advertising the print version of the Online Dictionary in a lecture on crystallography at the EPFL

The main purpose of the IUCr Online Dictionary of Crystallography (ODC) is to give the most appropriate definitions of crystallographic terms and concepts that are found in the scientific literature

Why is X-ray crystallography important?

Combined with advances in analysis methods and new ways of crystallising various materials, X-ray crystallography was ready to become a central tool in deciphering the mysteries of the world around us

Nowhere has this tool benefited society more than in health and medicine

And no one has contributed more to the field than Dorothy Hodgkin

Crystallography is the study of the arrangement of atoms in solids that are mostly in three dimensional pattern. Before the development of X-ray crystallography, the study of crystals was based on their geometry. This involves measuring the angles of crystal faces, and establishing the symmetry of the crystal in question.

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