Lattice Plane

Lattice Plane In crystallography, a lattice plane of a given Bravais lattice is a plane (or family of parallel planes) whose intersections with the lattice (or any crystalline structure of that lattice) are periodic (i.e. are described by 2d Bravais lattices) and...

Bravais lattice

Bravais lattice Crystals are grouped into seven crystal systems, according to characteristic symmetry. The characteristic symmetry is the minimum symmetry of that system. The characteristic symmetry of a crystal is a combination of one or more rotations and...

Unit Cell

Unit cell               Unit cell can be considered as the building block of a crystal. It has the same symmetry as the entire crystal. When we arrange the unit cell in 3D, we get the bulk crystal. In other words, it can be described...

Projection of Truncated Solids

Projection of Truncated Solids   Development of a truncated  prism The method of obtaining the development of a truncated prism is shown in figure 1. Step 1: Draw the stretch-out line in the front view, along the base of the prism and equal in length to the...

Sections of Solids

Sections of Solids Sample Problem 1:A hexagonal prism, side of base 30 mm and axis 60 mm long, rests with its base on HP such that one of its rectangular faces is parallel to VP. A section plane perpendicular to HP and parallel to VP cuts the prism at a distance of 10...