Gordon Penrose Books

Presents twenty-one projects which can be safely done at home using readily available materials, demonstrating basic scientific concepts, from physics to chemistry to biology.

Sensational science activities with Dr. Zed

By Gordon Penrose

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Presents twenty-one projects which can be safely done at home using readily available materials, demonstrating basic scientific concepts, from physics to chemistry to biology.

Doctor Zed s Zany Brilliant Book of Science Experiments

By Gordon Penrose

Average: 0.00, 0 Ratings

Science experiments with such titles as "Flip Flop--Magic Moving Pictures," "Ice Cream," "Groovy Sounds," and "Upsidedown Roots."

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.