
Electrodynamics
 Scalar and Vector Fields
 Gradient, Del and Curl Operators
 GaussDivergence Theorem and its Physical Interpretation
 Stokes’ Theorem
 Differential Form of Gauss’s Law
 Differential form of Faraday’s Law
 Differential Form of Ampere’s Law
 Continuity Equation
 Maxwell’s Equations
 Electromagnetic Wave Equations

LASER

Optical Fibers

Magnetic Materials

Superconductivity

Quantum Mechanics

Electronic Properties of Solids

Relativity
BCS Theory of Superconductivity
BCS Theory of Superconductivity
When an electron passes nearby an adjacent positive ion, both interact electrostatically. In this way, momentum is imparted to the ions which cause them to move together due to elastic behavior of the lattice. This slight movement together increases the positive charge density in the lattice, this region of increased positive charge density propagates as a wave, which carries momentum through the lattice. By this way, this first electron emits a phonon which is absorbed by the second one which passes near to the region. This interaction between two electrons via phonons exceeds the coulomb’s repulsion. Thus a pair is formed known as Cooper pair. These cooper pair have opposite spin and hence the total spin of the pair is zero. Due to this reason, the cooper pair are treated as bosons.
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Nice informative video,Helps students to score good marks in engineering Physics
Thank you Tapas for your time and kind feedback.
A very instructive way of learning physics practically through experiments.
Thank you Dipin Gandhi, hope you are doing great at your end. Best wishes always.
Great initiative
Thank you Shivang.
best wishes always.
Excellent and very informative 👍
Thank you Ashima madam for your kind words.