Deep below the surface of the Earth is the liquid outer core of the planet. This core is composed mostly nickel and iron and rotates independently of the rest of the planet. This spinning ball of iron creates th
Why is soft iron used as the core of the electromagnet in an electric bell? How can grounding prevent property damage and harm, even death when lightning strikes? What's the difference between the ambient pressure (1013.25 mb), and the lightning bolt pressure. What does this have to do wit...