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#### Published on 28 May 2014 | over 4 years ago

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7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use.

Crystal Lattice and Unit Cell: A three dimensional cubic latticeThe three dimensional arrangement of particles as points in space is called space lattice or crystal lattice. There are 14 different three dimensional lattices are possible which are called Bravais lattice. Bravais was a French mathematician.Unit cell parameters a, b, c are three edges, as α, β and γ are the angles between them.Unit cell is the simple part of crystal lattice which repeats itself to generate a crystal. In unit cell the three edges are represented by a, b, and c and the angles between these edges as α, β and γ.Unit cell: 1 Primitive 2 Centered : 1 Body centered 2 Face centered 3End centered. Body Centered. Face Centered. End Centered. Types of unit cells: It is of two types: a Primitive and b Centered.When the constituent particles are present only at the corners of the unit cell then it is called primitive unit cell.When the constituent particles are present at other positions along with corners then it is called centered unit cell. It is again of three types: i Body centered, ii Face centered and iii End centered.If the constituent particle is present at the body centered along with corners called Body Centered Unit Cell.If the constituent particles are present at the 6 face centers along with corners called Face Centered Unit cell.If the constituent particles are present at the centers of any two opposite faces along with corners called End Centered Unit Cell.Seven crystal systems: Crystal Systems: - there are 230 crystal forms possible. These are classified into 32 classes on the basis of symmetry which are further divided into seven crystal systems depending on the crystallographic parameters a, b, c and α, β, γ.
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