Book scanning is when someone takes a picture of every page in a book using a special machine called a scanner. Imagine if you had a special camera that could take a picture of each page of your favorite storybook or coloring book.
The scanner is like a big camera that takes pictures really fast. The person operating the scanner carefully puts each page of the book on a piece of glass so that it doesn't move around when the pictures are taken. Once all the pages have been scanned, the computer puts all the pictures together to make a digital copy of the book.
This is really helpful because it means that people can read the book on their computer or tablet without having to carry the actual physical book with them. It also makes it easier for people to share the book with others who might not have access to it.
Sometimes people use book scanning to make copies of rare or old books that might be too fragile to handle a lot. This way, more people can read the book without it getting damaged.
But it's important to remember that not all books can be scanned without permission from the person who owns the rights to the book. It's like asking if you can borrow a toy from a friend - you have to make sure it's okay with them first.