ScienceWiz Inventions: This multi-award winning book and kit uses everyday materials to build. Imagine building a working radio using only aluminum foil, wire and a diode. That’s it. No battery required. Now make a spinning motor using only paper clips, a magnet, a bit of wire and a battery. Light a bulb by spinning a coil of wire next to a bar magnet. Make a telegraph click and send coded messages to a friend using just two paper clips, a nail, wire and a battery. Every day materials, indeed! These are all inventions with coils. With these inventions you can explore the discoveries of Michael Faraday and Nikola Tesla, two scientists whose work led to the creation of the electrical grid.