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Semiconductors and p-n Junction | Intrinsic, Extrinsic & Working

February 15, 2026

“Types of Semiconductors and P-N Junction Explained with Energy Band Diagrams | Intrinsic, Extrinsic, n-Type & p-Type” Author: Prof....

Conductors, Insulators and Semiconductors | Classification and Examples

February 14, 2026

“Understanding Materials: A Guide to Conductors, Insulators, and Semiconductors” Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years of experience...

How to Identify Whether a Photograph Is 2D or 3D | Physics of Imaging

February 1, 2026

How to Recognize Whether a Photograph Is 2D or 3D? Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years of...

LASER working principle, Types and Applications explained

January 26, 2026

Part 2: “How Laser work? Stimulated emission, Types, and mind-blowing applications” Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years...

LASER Basics: History, Einstein Theory & Population Inversion

January 23, 2026

“Basics of LASER: From Einstein’s prediction to magical light machines” Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years...

सुयोग्य जीवनशैली: निरोगी आरोग्यासाठी ABCDEFGH सूत्र | डॉ. ह.वि. सरदेसाई

January 18, 2026

“जीवनशैली – सुयोग्य व सहज: निरोगी आरोग्याकडे नेणारा राजमार्ग” Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years of experience...

Units and Measurements: Dimensions, Errors & SI Units Guide

January 16, 2026

“Units and Measurements: Dimensions, Errors and Significant figures explained” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S. 50+ Years of...

इकिगाई म्हणजे काय? | Ikigai Japanese Secret of Happy and Long Life

January 12, 2026

“इकिगाई म्हणजे नेमकं काय? प्रत्येकाने समजून घ्यावं असं जपानी जीवनरहस्य” Ikigai Japanese Secret of Happy and Long Life Author: Prof....

अर्धजागृत मनाला प्रोग्राम कसे करावे? | ध्येयपूर्तीचे ८ टप्पे | How to use Subconscious Mind in Marathi

January 11, 2026

भाग २: “अर्धजागृत मनाचा वापर कसा करावा? यशस्वी होण्याचे ८ प्रभावी टप्पे” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S....

अर्धजागृत मन काय आहे? | अल्लादीनचा दिवा आणि मानवी मन | Subconscious Mind in Marathi

January 10, 2026

भाग १: अल्लादीनचा जादूचा दिवा – तुमच्या अर्धजागृत मनाची अफाट शक्ती! Author: Prof. Kali Chandrakant M.Sc., M.Ed., D.C.S. 50+ Years...

“Dual nature of matter and energy: Wave–Particle duality explained with examples”

January 2, 2026

“Dual nature of matter and energy: Wave–Particle duality explained with examples” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S....

ऊर्जेचे नियम, एंट्रोपी आणि अभ्यास : शांत व यशस्वी जीवनाचा वैज्ञानिक मार्ग

December 29, 2025

“ऊर्जेचे नियम, एंट्रोपी आणि अभ्यास : शांत व यशस्वी जीवनाचा वैज्ञानिक मार्ग” शांत, सुखी व समृद्ध जीवन जगण्यासाठी ऊर्जेचे नियम...

“Two secrets of circular motion explained with diagrams”

December 27, 2025

“Two secrets of circular motion explained with diagrams” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S. 50+ Years of...

“ ನನ್ನ ಜೀವನಕ್ಕೆ ಪರಸಸ್ಪರ್ಶ ನೀಡಿದ ನನ್ನ ಗುರುಗಳು ಆದರಣೀಯ ಖಟ್ಟೆ ಗುರುಜಿಗಳು”

December 25, 2025

“ ನನ್ನ ಜೀವನಕ್ಕೆ ಪರಸಸ್ಪರ್ಶ ನೀಡಿದ ನನ್ನ ಗುರುಗಳು ಆದರಣೀಯ ಖಟ್ಟೆ ಗುರುಜಿಗಳು” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S....

माझ्या आयुष्याला परीसस्पर्श करणारे माझे शिक्षक आदरणीय खट्टे गुरुजी

December 25, 2025

“माझ्या आयुष्याला परीसस्पर्श करणारे माझे शिक्षक आदरणीय खट्टे गुरुजी” Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S. 50+ Years...

“Positive thinking for success | Conquer the peak of achievement”

December 25, 2025

“Positive thinking for success | Conquer the peak of achievement” Author: Prof. Kali C. S. M.Sc., M.Ed.,...

“The real concept of electron flow in a conductor” Clearing a fundamental misconception in electricity

December 22, 2025

“The real concept of electron flow in a conductor” Clearing a fundamental misconception in electricity. Author: Prof. Kali Chandrakant...

How to draw ray diagrams for a Convex Lens, Compound Microscope and Telescope? (Student-friendly guide)

December 11, 2025

How to draw ray diagrams for a Convex Lens, Compound Microscope and Telescope? (Student-friendly guide) Author: Prof. Kali C....

“How to Draw Circuit Diagrams in Physics (HSC Level) – Smart Techniques with Step-by-Step Guide”

December 7, 2025

“How to Draw Circuit Diagrams in Physics (HSC Level) – Smart Techniques with Step-by-Step Guide” Author: Prof. Kali C....

How to draw the ray diagram used to derive the distance between the virtual sources in the Bi-prism experiment?

December 2, 2025

How to draw the ray diagram used to derive the distance between the virtual sources in the Bi-prism experiment? Author:...

How to draw diagrams for modes of vibrating air column in a tube open at both ends? (Smarter Techniques):

November 30, 2025

How to draw diagrams for modes of vibrating air column in a tube open at both ends? (Smarter Techniques): Author:...

How to draw ray diagram for bi-prism experiment (step-by-step | Smart techniques)

November 29, 2025

How to draw ray diagram for bi-prism experiment (step-by-step | Smart techniques): Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S....

$How to Draw the Ray Diagram for Refraction at a Plane Boundary Using Huygens’ Principle – Smarter Techniques$

How to Draw the Ray Diagram for Refraction at a Plane Boundary Using Huygens’ Principle – Smarter Techniques

November 28, 2025

How to Draw the Ray Diagram for Refraction at a Plane Boundary Using Huygens’ Principle – Smarter Techniques Author: Prof....

How to Draw the Ray Diagram for Reflection at a Plane Surface Using Huygens’ Principle– Smarter Techniques

November 27, 2025

How to Draw the Ray Diagram for Reflection at a Plane Surface Using Huygens’ Principle– Smarter Techniques Author: Prof....

यशाचे शिखर पादाक्रांत करायचे असेल तर ठेवा सकारात्मक दृष्टिकोन

November 21, 2025

यशाचे शिखर पादाक्रांत करायचे असेल तर ठेवा सकारात्मक दृष्टिकोन Author: Prof. Kali C. S. M.Sc., M.Ed., D.C.S. 50+ Years of Experience in Physics Teaching 1. प्रस्तावना:...

How to draw diagrams for modes of vibrating air column in a tube closed at one end – Smarter Techniques

November 20, 2025

How to draw diagrams for modes of vibrating air column in a tube closed at one end – Smarter Techniques “Harmonics...

How to draw diagrams for Modes of vibrating Stretched String? – Smarter Techniques

November 19, 2025

How to draw diagrams for Modes of vibrating Stretched String? – Smarter Techniques: Author: Prof. Kali C. S. M.Sc., M.Ed.,...

How to draw a vector diagram for the motion of Simple pendulum as a S. H. M.? (Smarter Techniques)

November 18, 2025

How to draw a vector diagram for the motion of Simple pendulum as a Simple Harmonic Motion? (Smarter Techniques) ...

How to Draw a Vector Diagram for a Vehicle Moving on a Curved Banked Road? (Smarter Techniques)

November 17, 2025

How to Draw a Vector Diagram for a Vehicle Moving on a Curved Banked Road? (Smarter Techniques) Author: Prof....

How to Draw Physics Diagrams Smartly ( Board examination of Class 10–12 Students)

November 16, 2025

How to Draw Physics Diagrams Smartly ( Board examination of Class 10–12 Students) By Prof. Chandrakant Kali Smarter Diagram Skills...

“ऊर्जेचे नियम, मेंदूची कार्यपद्धती आणि स्मरणशक्ती वाढवण्यासाठी अभ्यासाची वैज्ञानिक पद्धत”

November 15, 2025

“ऊर्जेचे नियम, मेंदूची कार्यपद्धती आणि स्मरणशक्ती वाढवण्यासाठी अभ्यासाची वैज्ञानिक पद्धत” “The laws of energy, the functioning of the brain, and...