1R50.20 - Crystal Models and Lattices

14 Bravais Lattice Models
C-60 Buckminsterfullerene
Ice, H2O with 26 water units
Adam Hilger Stereoscope with a collection of crystal images and pictures edited by Sir William Bragg and Prof. W. L. Bragg
Code Number:
1R50.20
Demo Title:
Crystal Models and Lattices
Condition:
Excellent
Principle:
Crystal Formation and Structures
Area of Study:
Mechanics
Equipment:
Crystal Models.
Procedure:

The crystal models may be used to show different crystal structures and the structure of crystal compounds.

The 14 Bravais Lattice Models consist of:

  •   Triclinic P. 
  •   Monoclinic P.
  •   Monoclinic C.
  •  Orthorhombic P.
  •  Orthorhombic C.
  •  Orthorhombic  F.
  •  Orthorhombic I.
  •  Tetragonal P.
  •  Tetragonal I.
  • Triagonal R.
  • Triagonal Hexagonal C (or P)
  • Cubic P.
  • Cubic F.
  • Cubic I.

The 18 lattices that supplement the translational Bravais lattices are:

  • KS7998a Monoclinic Lattices with Centered XZ-Plane
  • KS7998b Monoclinic Base-centered Lattice with Inclined Prism as Primitive Cell
  • KS7998c Orthorhombic Base-centered Lattice with Orthorhombic Prism as Primitive Cell
  • KS7998d Orthorhombic Face-centered Lattice Rhombohedral-type Primitive Cell
  • KS7998e Orthorhombic Face-centered Lattice with Inclined Prism as Primitive Cell
  • KS7998f Orthorhombic Body-centered Lattice with Rhombohedral-type Primitive Cell
  • KS7998g Orthorhombic Body-centered Lattice with Inclined Prism as Primitive Cell
  • KS7998h Tetragonal Base-centered Lattice with Primitive Tetragonal Cell
  • KS7998i Tetragonal Face-centered Lattice
  • KS7998j Tetragonal Body-centered Lattice with Rhombohedral-type Primitive Cell
  • KS7998k Tetragonal Body-centered Lattice with Incline Prism as Primitive Cell
  • KS79981 Rhombohedral Lattice with Hexagonal Cell
  • KS7998m Rhombohedral Lattice in Hexagonal Prism
  • KS7998n Rhombehedral Lattice in Hexagonal Prism (600 angle: cubic close packing)
  • KS7998o Hexagonal Lattice: Hexagonal Prism
  • KS7998p Cubic Face-centered Lattice with Rhombohedral Primitive Cell
  • KS7998q Cubic Body-centered Lattice with Rhombohedral Primitive Cell
  • KS7998r Cubic Body-centered Lattice with Inclined Prism as Primitive Cell

Other crystal models we have are Krypton, C Diamond ( ZnS Sphalerite), Wurtzite ( ZnS), C Graphite, Calcite (CaCo3), Cesium Chloride (CsCl), Sodium Chloride (NaCl), Aluminum ( Cubic Close-Packing), Ice  - 26 H20 Units, C-60 Buckminsterfullerene, Carbon Dioxide, Copper, Magnesium.

The crystal models may also be built from scratch with the model kits.

An antiques folding pocket stereoscope made by Adam Hilger, Ltd of London with a collection of stereoscope slides.  The slides are of crystals, and other scientific apparatus and the whole collection was edited by Sir William Bragg and Prof. W. L. Bragg.  

References:
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  • Wallace A. Hilton, "A-1d. Crystal Lattice Models", Physics Demonstration Experiments, p. 105.
  • Alan Holden and Phylis Morrison, "The Table of Crystal Classes", Crystals and Crystal Growing, p. 285 - 288.
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