A toroid using a square. A torus is a type of toroid. In mathematics, a toroid is a surface of revolution with a hole in the middle. The axis of revolution passes through the hole and so does not intersect …

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The earliest known use of the word “toroid” dates back to the 1880s, and it was first recorded in the writings of George Carr. The toroid’s unique shape and the way it confines the magnetic field have …

Mar 3, 2025 · The turns of a toroid form a helix, rather than circular loops. As a result, there is a small field external to the coil; however, the derivation above holds if the coils were circular.

Apr 6, 2003 · Sometimes these are incorrectly spelt torroids. These come in two types, powdered iron toroids or ferrite toroids. Both introduce permeability. Toroids look exactly like doughnuts and come …

The meaning of TOROID is a surface generated by a closed plane curve rotated about a line that lies in the same plane as the curve but does not intersect it.

The first toroid was invented in 1830 by the physicist Michael Faraday. He noticed that the change in the magnetic field resulted in the voltage in a wire. This phenomenon is known as Faraday’s law of …

Different toroids come in different sizes, shapes, and materials, each with its own set of advantages and disadvantages. This article will explore the different sizes and shapes of toroids, explain the …

Dec 22, 2025 · A surface of revolution obtained by rotating a closed plane curve about an axis parallel to the plane which does not intersect the curve. The simplest toroid is the torus. The word is also used …

Toroidal inductors and transformers are used in a wide range of electronic circuits: power supplies, inverters, and amplifiers, which in turn are used in the vast majority of electrical equipment: TVs, …