Helge Kragh Books

Masters of the Universe: Conversations with Cosmologists of the Past

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" ... Based on a series of interviews that a fictional person conducted with leading astronomers between 1913 and 1965 ... Although the interviews are purely fictional, a product of the author's im...

Conceptions of Cosmos: From Myths to the Accelerating Universe: A History of Cosmology

By Helge Kragh

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Presenting a history of how the universe at large became the object of scientific understanding, this title offers an integrated and comprehensive account of cosmology that covers all major events...

AN INTRODUCTION TO THE HISTORIOGRAPHY OF SCIENCE.

By Helge. Kragh

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Dirac

By Helge Kragh

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An Introduction to the Historiography of Science

By Helge Kragh

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The Making of the Chemist

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Cosmology and controversy

By Helge Kragh

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For over three millennia, most people could understand the universe only in terms of myth, religion, and philosophy. Between 1920 and 1970, cosmology transformed into a branch of physics. With this...

Entropic creation

By Helge Kragh

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Matter and spirit in the universe

By Helge Kragh

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Matter And Spirit In The Universe

By Helge Kragh

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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.