Search results
- Dictionarycrystal/ˈkrɪstl/
noun
- 1. a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces: "a quartz crystal"
- 2. highly transparent glass with a high refractive index: "a crystal chandelier"
adjective
- 1. clear and transparent like crystal: "the clean crystal waters of the lake"
Powered by Oxford Dictionaries
Crystal, any solid material in which the component atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Crystals are classified in general categories, such as insulators, metals, semiconductors, and molecular solids.
Crystal - Structure, Lattice, Symmetry: Crystals can be grown under moderate conditions from all 92 naturally occurring elements except helium, and helium can be crystallized at low temperatures by using 25 atmospheres of pressure.
Single crystal, any solid object in which an orderly three-dimensional arrangement of the atoms, ions, or molecules is repeated throughout the entire volume. Certain minerals, such as quartz and the gemstones, often occur as single crystals; synthetic single crystals, especially silicon and gallium.
Crystal defect, imperfection in the regular geometrical arrangement of the atoms in a crystalline solid. Located at single points, along lines, or on whole surfaces in the solid, these defects influence its mechanical, electrical, and optical behavior.
CRYSTAL meaning: 1 : a small piece of a substance that has many sides and is formed when the substance turns into a solid; 2 : a clear hard mineral that is either colorless or very light in color and that is used in making jewelry
crystal, Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal’s millions of individual structural units (unit cells) contains all the substance’s atoms, molecules, or ions in the same proportions as in its chemical formula ( see formula weight).
rock crystal, transparent variety of the silica mineral quartz that is valued for its clarity and total lack of colour or flaws. Vessels and spheres have been carved from large crystals since ancient times, and the application of the word crystal to fine glassware derives from this practice.
Aug 26, 2024 · Liquid crystal, substance that blends the structures and properties of the normally disparate liquid and crystalline solid states. Liquids can flow, for example, while solids cannot, and crystalline solids possess special symmetry properties that liquids lack.
The scientific definition of a crystal is based on its internal structure rather than its outward appearance. All matter on Earth is made up of atoms or, more frequently, combinations of atoms called molecules .
Crystal - Molecular, Binding, Structure: The Dutch physicist Johannes D. van der Waals first proposed the force that binds molecular solids. Any two atoms or molecules have a force of attraction (F) that varies according to the inverse seventh power of the distance R between the centres of the atoms or molecules: F = −C/R7, where C is a constant.
