Category: Research

  • Fundamental types of crystal lattices and their symmetry operations

    Fundamental types of crystal lattices and their symmetry operations

    Fundamental types of crystal lattices and their symmetry operations. Topics covered a. Types and classes of crystals, b. Symmetry operations in crystals In this lecture we will follow through our basic knowledge gained in the last lecture. — lecture — I, II, and shed light on the most interesting properties of crystal lattices, viz. their symmetry…

  • Helmholtz theorem in electrodynamics, Gauge transformation.

    Helmholtz theorem in electrodynamics, Gauge transformation.

    Electromagnetic theory, lecture — IV Topics covered in this lecture a. Helmholtz theorem — in electrodynamics b. Gauge transformation — of scalar and vector potential in electrodynamics c. Coulomb and Lorentz gauge All electromagnetic theory lectures of this series, will be found here (https://mdashf.org/category/electromagnetic-theory/) In our previous lecture — lecture — III, we discussed in quite detail,…

  • Helmholtz theorem. Scalar and vector potentials

    Helmholtz theorem. Scalar and vector potentials

    This lecture develops the formalism of electrodynamics in a very methodical way. It covers the following topics in detail. A. Formalism of electrodynamics — fundamental theorem B. Application of Helmholtz theorem — to electrostatics C. Application of Helmholtz theorem — to magnetostatics

  • Boundary conditions on electric and magnetic fields.

    Boundary conditions on electric and magnetic fields.

    Electromagnetic theory, Lecture — II.  Boundary conditions on Electric and magnetic fields in Maxwell’s equations Topics covered A. Summary of Maxwell’s equations — in free space and in material media B. Integral forms of Maxwell’s equations — by application of vector calculus C. Derivation of boundary conditions — on electric and magnetic fields In the last…

  • Maxwell’s equations

    Maxwell’s equations

    Electromagnetic theory, Lecture — I. Maxwell’s equations This lecture, the web version of the first lecture given in the electromagnetic theory paper of the physics honors degree class, was delivered on 21st December 2017. All electromagnetic theory lectures of this series, will be found here.  Also read part-2 of the linked lecture. That describes the…