Peter Lay Books

Advanced Theory of Relativity
Advanced Theory of Relativity

By Peter Lay

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Yellow Over The Mountain
Selbstbauprojekte mit Leuchtdioden
Selbstbauprojekte mit Leuchtdioden

By Peter Lay

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Hauptbeschreibung Wa hrend Leuchtdioden fru her nur fu r Anzeigetafeln verwendet wurden, halten sie nun zunehmend in den Privatbereich Einzug und gewinnen immer mehr an Beliebtheit. Die Leistungsfa...

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Experimente mit paranormalen Phanomenen.
Selbstbauprojekte mit Leuchtdioden
Die Physik der Pharaonen. Prahistorische Erfindungen experimentell erleben.
Experimente mit freier Energie.
Experimente mit Strahlungsquellen im Haushalt.
Signale aus dem Weltraum. Einfache Experimente zum Empfang ausserirdischer Radiosignale.
Kirlian Fotografie.
Kirlian Fotografie.

By Peter Lay

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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.

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