Description:
Electromagnetic theory and applications.
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Are there torus shaped permanent magnets ?
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Ive tried making a torus shaped (circular or donut shaped)
magnetic field by arranging a circle of bar magnets.
Unfortunately all I get is a series of north south poles In a circle.
My question is.. are torus shaped permanent magnets possible to make and buy. Ive noticed horseshoe shaped
Fields are available so thats half way there.... more »
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Can Angular momentum travel down an electric cord?
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Do you recall the Feynman Paradox? Here's the question. We all know that energy can travel down an electric cord. The evidence is everywhere, The heating of irons, the pulling of solenoids against springs, the lifting of elevators etc. And clearly when there is linear motion with mass (mv) there is also momentum which is... more »
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