Nanny Froman Books

Phase Integral Method

By Nanny Froman, N. Froman, A. Hokback, A. Dzieciol, Per O. Froman, S. Linnaeus, B. Lundborg, E. Walles, P.O. Froman

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This book is the result of two decades spent by the authors developing and refining the phase-integral method to a high level of precision. The efficiency of the phase-integral method has been show...

Physical Problems Solved by the Phase Integral Method

By Nanny Froman

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Covers a mathematical approximation method of central importance to many branches of theoretical physics, applied mathematics and engineering. Written with practical needs in mind, with 50 solved p...

Physical Problems Solved by the Phase-Integral Method

By Nanny Froman

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Physical Problems Solved by the Phase-Integral Method

By Nanny Froman

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Physical Problems Solved by the Phase Integral Method

By Per Olof Froman, Nanny Froman

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Physical Problems Solved by the Phase-Integral Method

By Nanny Froman

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Stark effect in a hydrogenic atom or ion

By Nanny Froman

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Physical Problems Solved by the Phase Integral Method

By Per Olof Froman, Nanny Froman

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Physical Problems Solved by the Phase Integral Method

By Per Olof Froman, Nanny Froman

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Stark Effect in a Hydrogenic Atom or Ion

By Per Olof Froman, Nanny Froman

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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.