Book excerpt: "Ever wonder how astronauts are able to breathe a continuous supply of oxygen in space? This hands-on approach to electricity and magnetism lets readers conduct experiments to answer this and other fascinating questions. Readers will love learning that the scientific principles they're applying at home have real-world applications. For example, they'll rock out on their own ""electric drums"" while learning about technological advances in professional instruments. Simple step-by-step instructions accompanied by detailed photographs make each activity accessible, while handy tips ensure readers' safety and fun. Budding scientists will enjoy exploring the recommended twists and additions to experiments."