NOTES FOR PHYSICS

Your go-to resource for concise and informative notes on a wide range of physics topics. Explore our collection and enhance your knowledge.

Niels H. D. Bohr

Anyone who is not shocked by quantum theory has not understood it.

Niels H. D. Bohr
– Albert Einstein

We cannot solve our problems with the same thinking we used to create them.

– Albert Einstein
– Galileo Galilei

You cannot teach a man anything; you can only find it within yourself.

– Galileo Galilei
– Richard P. Feynman

Nobody ever figures out what life is all about, and it doesn’t matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.

– Richard P. Feynman

Recent Notes

Latest additions to the notebook — scroll through.

Magnetism Basics: Definition, Types, & Temperature Dependence

Magnetism Basics: Definition, Types, & Temperature Dependence

Feb 1, 2026 · Rajnandini Sharma, PhD · ⏱ 6 min read

A foundational walkthrough of magnetic fields, north-south poles, and how magnetic forces act on moving charges. Read more about Magnetism Basics: Definition, Types, & Temperature Dependence

Newton’s Third Law: Definition, Applications, Misconceptions, & Examples

Newton’s Third Law: Definition, Applications, Misconceptions, & Examples

Dec 22, 2025 · Pravin Sharma, MS · ⏱ 12 min read

Action and reaction pairs explained using everyday examples and free-body reasoning. Read more about Newton’s Third Law: Definition, Applications, Misconceptions, & Examples

Newton’s Second Law: Definition, Units, Applications & Examples

Newton’s Second Law: Definition, Units, Applications & Examples

Nov 8, 2025 · Pravin Sharma, MS · ⏱ 11 min read

Everything you need to understand F = ma — statement, units, free-body diagrams, component form, common misconceptions, and… Read more about Newton’s Second Law: Definition, Units, Applications & Examples

Spin-Orbit Coupling Explained: Electron Moments, the Nucleus & Spintronics Applications

Spin-Orbit Coupling Explained: Electron Moments, the Nucleus & Spintronics Applications

Nov 2, 2025 · Rajnandini Sharma, PhD · ⏱ 6 min read

Spintronics is where the story of tiny electron spins meets real-world technology. In this blog, I talk about… Read more about Spin-Orbit Coupling Explained: Electron Moments, the Nucleus & Spintronics Applications

Refraction of Light: Definition, Laws, Causes, Applications, and Examples

Refraction of Light: Definition, Laws, Causes, Applications, and Examples

Oct 8, 2025 · Pravin Sharma, MS · ⏱ 10 min read

Light bends when it crosses from one medium to another — but why? Explore the definition, laws, causes,… Read more about Refraction of Light: Definition, Laws, Causes, Applications, and Examples

Newton’s First Law (Law of Inertia): Definition, Examples & Applications

Newton’s First Law (Law of Inertia): Definition, Examples & Applications

Sep 27, 2025 · Pravin Sharma, MS · ⏱ 15 min read

Inertia is explained through simple examples, conceptual traps, and classroom demonstrations. Effects of equilibrium, misconceptions of inertia, types… Read more about Newton’s First Law (Law of Inertia): Definition, Examples & Applications

History of Magnetism: A Complete Guide from Ancient Lodestones to Modern Science

History of Magnetism: A Complete Guide from Ancient Lodestones to Modern Science

Sep 9, 2025 · Rajnandini Sharma, PhD · ⏱ 5 min read

From lodestones to modern spintronics, this note traces how magnetism became a central physics idea. Read more about History of Magnetism: A Complete Guide from Ancient Lodestones to Modern Science

Reflection of Light: Laws, Types, Application, & FAQs

Reflection of Light: Laws, Types, Application, & FAQs

Aug 2, 2025 · Pravin Sharma, MS · ⏱ 6 min read

Why does a mirror show your face, but a wall doesn't? Learn the two laws of reflection, the… Read more about Reflection of Light: Laws, Types, Application, & FAQs

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