A common use place for magnetizer

     A mechanical device such as a magnetizer sounds like a very high-end technology product, but in fact, its function is very simple, that is, to make objects that do not originally have magnetism become magnetic. Even in our daily lives, magnetizers can be seen in many places.

     For example, the library. When we borrow books, we often need to hand over the books to the administrator before they can be taken out of the library. In fact, this step is to remove the magnetism on the books, so that the books will not be intercepted by the detection machine when they are taken out of the library, and cause the detection equipment to alarm. After returning the book, the administrator will use the magnetizer to magnetize the book to make it magnetic. In this way, the books cannot be taken out of the library without being demagnetized by the administrator (the magnetism will be detected when passing through the detection equipment, which will cause an alarm) to prevent theft.

     Therefore, the library is a place where magnetizers are frequently used in our daily lives.