Crystal Structure

The discovery of x-ray diffration by crystals, properties of crystals and electrons in crystals has opened up an amazing fields of study. A crystal is formed by adding atoms in a constant environment. [Read More]

Riemannian Geometry

The need for riemannian geometry arises from the fact that there does not always exist a system of coordinates in terms of which the distance between any two neighboring points in the space is given by the sum of the squares of the coordinate differentials. The first example comes to... [Read More]