Apni Physics

Length Contraction | Special Theory of Relativity|

Post author:Dr Sushil Kumar
Post published:03/02/2017
Post category:Class Notes
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Post last modified:22/08/2019
Reading time:1 min read

In this video lecture I have discussed about the Length Contraction. To understand it the basic information about the two transformations (Galilean and Lorentz) are important. It is based on…

Galilean Transformation |Special Theory of Relativity|

Post author:Dr Sushil Kumar
Post published:03/02/2017
Post category:Class Notes
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Post last modified:21/08/2019
Reading time:4 mins read

The Einstein in 1905 introduce the concept of Special Theory of Relativity. In our daily life we see the effects of the relative motion, for an example if suppose there…

Time Dilation |Special Theory of Relativity|

Post author:Dr Sushil Kumar
Post published:01/02/2017
Post category:Class Notes
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Post last modified:21/08/2019
Reading time:4 mins read

In this video lecture I have discussed about the time dilation, which comes under the Special theory of Relativity Unit. To understand this concept the basics like frame of reference,…

How to Understand Atomic Dipole Moment Concept

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:21/08/2019
Reading time:1 min read

In this video lecture some basics of the Atomic Dipole Moment are discussed. How one atom can be equivalent to the tiny bar magnet? and when an atom is placed…

Space Quantization and Atomic Dipole Moment

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:12/05/2020
Reading time:2 mins read

Vector Atom Model In quantum mechanics, we know the discreteness of the possible spatial orientations of the angular momentum of an atom (or another particle or system of particles, molecules)…

Particle in a One Dimensional Box- Quantum Mechanics

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:22/08/2019
Reading time:3 mins read

In this video Lecture you will found: The Eigen function and Eigen values of a free particle and relation with the momentum and de Broglie wavelength.What is free particle? a…

de Broglie Waves-Matter Waves and its Wavelength

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:22/08/2019
Reading time:1 min read

de Broglie Waves or Matter Waves and its Wavelength is discussed in this lecture. de Broglie waves are associated with a materialistic particle. A matter can show the dual…

Schrodinger’s Time Dependent and Time Independent Wave Equations

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:22/08/2019
Reading time:1 min read

Schrodinger's Wave Equations, time independent and time dependent's derivation is discussed here.

Concept of Wave Packet, Phase Velocity & Group Velocity for de Broglie Waves

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
Post comments:1 Comment
Post last modified:24/11/2019
Reading time:1 min read

de Broglie Waves: Concept of Wave Packet, Phase & Group Velocity are discussed in this video.

Beta decay does electron exist inside the atomic nucleus?

Post author:Dr Sushil Kumar
Post published:29/01/2017
Post category:Class Notes
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Post last modified:21/08/2019
Reading time:1 min read

Beta-decay of nucleus shows that electron emits from the nucleus. Does electron exist inside the nucleus? This problem can be solved by using Heisenberg's Uncertainty Principle by using the minimum…