Theodore Gray Books

Elements 2017 Calendar: A Visual Exploration of Every Known Atom in the Universe

By Theodore Gray

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Theodore Gray'S Completely Mad Science: Experiments You Can Do At Home But Probably Shouldn'T

By Theodore Gray, Theodore W. Gray

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**The ultimate Theodore Gray collection, __Theodore Gray's Completely Mad Science__ collects every one of Gray's dramatic, visually spectacular, and enlightening scientific experiments into one com...

How Things Work: The Inner Life Of Everyday Machines

By Nick Mann, Theodore Gray, Gray, Theodore, Mann, Nick

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Million-copy bestselling author of The Elements , Molecules , and Reactions Theodore Gray applies his trademark mix of engaging stories, real-time experiments, and stunning photography to the i...

Molecules: The Elements and the Architecture of Everything

By Theodore Gray

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The Beginners Guide to MathematicaRG Version 4

By Theodore Gray, Jerry Glynn

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Theodore Gray s Elements Trilogy

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The Elements 2022 Wall Calendar

By Nick Mann, Theodore Gray

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The Elements 2023 Wall Calendar

By Nick Mann, Theodore Gray

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The Elements Notecards

By Theodore Gray

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Theodore Gray s My First Elements

By Theodore Gray

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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.