These effects are derived from two fundamental observations of physics: a steady current creates a steady magnetic field described by Oersted's law, and a time-varying magnetic field induces an electromotive force in nearby conductors, which is described by Faraday's law of induction.
Butter & salt. Preheat the oven to 400 degrees. Husk the corn, wrap each ear in foil, adding 2 teaspoons of butter to each packet. Bake for about 25 minutes or roast the foil-wrapped corn over hot coals turning once during the cooking. Serve with more butter and salt.
How to do it: Shuck corn and discard silk and husk. Wrap the corn in heavy duty aluminum foil, with or without a flavored butter or oil inside. Grill directly on hot coals, or on top of a grate set over the coals, turning occasionally until fully cooked, about 15 minutes.ow to do it: Place corn in the husk directly on top of hot coals and cook, turning occasionally, until it is steamed through to the center (you can peek and re-wrap the corn to check if you need to), about 15 minutes.