Beakman explains the history behind magnets and the difference between magnets and electromagnets. They then walk through making an electromagnet and demonstrate that the magnetic energy in the nail comes from the battery and isn't inherent in the nail. Beakman explains that the inherent energy separates electromagnets from regular magnets. Beakman then mentions some ways in which electromagnets are used in the world today.
This clip takes apart a coin sorter and explains how the inside of it works. It uses electromagnets, currents, and disturbances in magnetic fields to determine the amount of metal in the coin.
Phil introduces the concept of electromagnets and explains the difference between them and regular magnets. He then demonstrates how to create a DIY electromagnet.