Phy

Madras University

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Class notes

Statistical Mechanics – Classical Ideal Gas (Boltzmann Gas) – Physics Notes – Derivation and Thermodynamic Relations
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8

April 2026

2025/2026
This document explains the statistical mechanics of a classical ideal (Boltzmann) gas confined in a volume, focusing on the derivation of thermodynamic properties from microscopic states. It covers concepts such as energy quantization, phase space, and counting of microstates to obtain entropy. The notes further derive key relations like the ideal gas equation and connect macroscopic quantities (pressure, temperature) with microscopic behavior. It is useful for understanding the foundations of ...
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Class notes

Optics – Reflection and Transmission at Normal and Oblique Incidence with Fresnel’s Equations and Brewster’s Angle – Physics Notes – Theory and Derivations
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8

April 2026

2025/2026
This document covers the principles of reflection and transmission of light at both normal and oblique incidence, including the role of polarization. It introduces Fresnel’s equations and explains how reflection and transmission coefficients are derived for different polarizations. It also discusses Brewster’s angle, where reflected light becomes completely polarized, along with practical examples involving air–glass interfaces. The notes are useful for understanding wave optics and elect...
kalairks
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Class notes

Classical Mechanics – Kinetic Energy in Terms of Angular Velocity and Angular Momentum – Physics Notes – Derivation and Concept Explanation
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3

April 2026

2025/2026
This document explains how the kinetic energy of a rotating rigid body can be expressed using angular velocity and angular momentum. It derives the relationship between these quantities, including the role of moment of inertia and principal axes. The notes focus on rotational motion about a fixed point and provide a mathematical framework commonly used in advanced mechanics problems. It is useful for understanding rigid body dynamics and energy formulations in physics.
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Class notes

CLASSICAL MECHANICS - Euler & Lagrange Equations of motion and Bernoulli-s theorem
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3

April 2026

2025/2026
This document will give you an idea about Euler & Lagrange Equations of motion and Bernoulli-s theorem.
kalairks
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Class notes

Classical Mechanics – From Newtonian to Lagrangian and Hamiltonian Approaches – Academic Essay (Physics) – Conceptual Overview and Lecture Summary
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7

April 2026

2025/2026
This document explores the evolution of classical mechanics, starting from Newtonian mechanics and progressing to Lagrangian and Hamiltonian formulations. It explains key concepts such as forces, energy-based methods, generalized coordinates, and phase space in a conceptual and comparative manner. The content highlights the strengths and limitations of each framework and shows how advanced formulations simplify complex systems. It serves as a broad conceptual overview suitable for understanding...
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