Andrew Chadwick's is one of only three American institutions that use a professional induction cooktop. An induction-cooker element (what on a gas stove would be called a "burner") is a powerful, high-frequency electromagnet. When a good-sized piece of magnetic material--such as, for example, a cast-iron skillet--is placed in the magnetic field that the element is generating, the field transfers ("induces") energy into that metal. Basically, the pan itself is where the heat comes from and not the elements.
For more information on induction cooking, feel free to visit http://theinductionsite.com/
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