Paul Halpern Books

Einstein s Struggles with Quantum Theory

By Dipankar Home, Andrew Whitaker

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Faraway worlds

By Paul Halpern

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A introduction to the search for and discovery of planets outside our solar system and what life may be like on such distant worlds.

Faraway Worlds

By Paul Halpern Author Lynette R. Cook Illustrator

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Learn the secrets of planet-hunters as they search for planets beyond our solar system. Is there more to a star than meets the eye?Take a trip to an alien world and encounter wobbling stars, frozen...

The structure of the universe

By Paul Halpern

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Schule ist was fur Versager

By Paul Halpern

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Locher im All

By Paul Halpern

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Wei da de chao yue

By Paul Halpern

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El tiempo imperfecto

By Paul Halpern

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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.