Can I, when writing a book, make use of a physical model made up by someone else? Currently, I'm writing a book about everything from A to Z [physics, the science of the brain, AI, many more scientific topics, the &quot;philosophy&quot; (the workings) of the sciences, economy, the destruction of Nature and can she still be saved for future generations, the place of the sciences in society, etc.].
I'm a big fan of a certain physical model: The Rishon model, invented by Haïm Harari. Can I use his theory without further consequences? Or is it good propaganda for his theory?
Anyone can use anyone else’s published theory as long as they cite their sources and don’t try to falsely claim ownership of the ideas of others. So yes, if you present it honestly as Harari’s theory then of course you can use it in your book.