A round toroidal magnet does not radiate magnetic field in space because all the field lines are confined in the magnet. For non-circular toroidal magnet, it is thought that magnetic field leaks out only slightly. But rigorous theoretical and experimental studies that verify this hypothesis are rare. I have done a simple experiment to show how magnetic field leaks out from a non-circular toroidal magnet.

Please read the article at
Magnetic field of a non-circular toroidal magnet pdf or word

Magnetic field of a non-circular toroidal magnet http://pengkuanem.blogspot.com/2014/01/magnetic-field-of-non-circular-toroidal.html

or
https://www.academia.edu/5879020/Magnetic_field_of_a_non-circular_toroidal_magnet

With good accuracy, the magnetic field in the middle region outside a long bar magnet is zero. So, the Lorentz force must be zero there. But look at the video of my experiment “Macroscopic Aharonov–Bohm effect motor” http://youtu.be/786wRJqhoMY. The coil rotates without force!

Please read the article at

The magnetic field is zero but the motor works pdf or word

I have been silent for 2 months because I was trying to carry out a good perpendicular action experiment. Unfortunately, my material condition is too poor to carry out an acceptable one. So, I changed my mind and concentrated on finding application for parallel action. And I have found the anti-lorentzian motor.

Please read the article at
Anti-Lorentzian Motor pdf or word