Ajoy Ghatak Books

Introduction to Quantum Mechanics

By Ajoy Ghatak, Victor Weisskopf

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An Introduction to Equations of State: Theory and Applications

By Shalom Eliezer

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An Introduction to Fiber Optics

By K. Thyagarajan, Ajoy Ghatak, A. K. Ghatak

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Lagrangian Optics

By K. Thyagarajan, Ajoy Ghatak, Vasudevan Lakshminarayanan, V. Lakshminarayanan

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Polarization of light with applications in optical fibers

By Arun Kumar

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This book covers the basic concepts and methods involved in polarization of light, and features important methods of analysis such as Jones matrices, Stokes parameters, and Poincaré sphere. It prov...

Quantum mechanics

By Ajoy Ghatak, A. K. Ghatak, S. Lokanathan

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An understanding of quantum mechanics is vital to all students of physics, chemistry and electrical engineering, but requires a lot of mathematical concepts, the details of which are given with gre...

Quantum Mechanics

By Ajoy Ghatak, A. K. Ghatak, S. Lokanathan

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.