Can I take the pendulum to the classroom?

It is best not to bring the pendulum to the classroom, because there are many people in the school, the magnetic field is chaotic, and the pendulum will be mixed with other people's breath. Pendulum is an ancient detection technology. Its earliest use in Europe can be traced back to15th century, and its early use was mainly to find water sources and veins. Modern usage is influenced by mysticism, but it is more of a divination function. It is best not to bring the pendulum to the classroom, because there are many people in the school, the magnetic field is chaotic, and the pendulum will be mixed with other people's breath. Pendulum is an ancient detection technology. Its earliest use in Europe can be traced back to15th century, and its early use was mainly to find water sources and veins. Modern usage is influenced by mysticism, but it is more of a divination function.