The object of this article is to compute the overall Lorentz force a coil exerts on itself. For doing so, we cut the coil into 2 parts and compute the forces on each part, then sum the 2 forces. Naturally, many physicists suggest to compute the force by integrating the Lorentz force on the wire produced by the magnetic field in the vicinity of the wire, in Figure 1 (1).

Please read the article at
Computation of the self force of a coil
http://pengkuanem.blogspot.com/2013/05/computation-of-self-force-of-coil.html
or
http://www.academia.edu/3631539/Computation_of_the_self_force_of_a_coil

In real world, all objects obey Newton’s thirds law. A coil with current flowing within produces magnetic field that exerts force on the current of the coil itself. If the coil is not round, this force tends to make the coil round. But the total force on the coil is zero and the coil does not move as a whole. However, when this force is computed using the Lorentz force law, the total force is not zero. So, Newton is unhappy with Lorentz. In the following, we take the isosceles triangle coil ABC shown in Figure 1 and compute the total force numerically

Please read the article at
Unhappiness of Newton with Lorentz and triangular coil experiment
http://pengkuanem.blogspot.com/2013/05/unhappiness-of-newton-with-lorentz-and.html
or
http://www.academia.edu/3500211/Unhappiness_of_Newton_with_Lorentz_and_triangular_coil_experiment

I have proven theoretically that the Lorentz force internal to a coil is not zero (several proofs are in the references). But theoretical proofs are too long to read and too complex. I give here a numerical computation of the Lorentz force internal to an asymmetrical coil; the computed force is not zero.

Please read the article at
Numerical computation of the Lorentz force internal to an asymmetric coil
http://pengkuanem.blogspot.com/2013/04/numerical-computation-of-lorentz-force.html
or
http://www.academia.edu/3386868/Numerical_computation_of_the_Lorentz_force_internal_to_an_asymmetric_coil

This is the paper I submitted to a journal. Please make your opinion and tell me what you think.

The 2 experiments presented in this article show unknown properties of magnetic force. The Lorentz force law can neither explain these properties nor compute the magnetic force internal to an open circuit. A correction added to the present magnetic force theory allows explaining these new discoveries.

Please read the article at
http://pengkuanem.blogspot.com/2013/04/unknown-properties-of-magnetic-force.html
or
http://www.academia.edu/3266279/Unknown_properties_of_magnetic_force_and_Lorentz_force_law

I have designed the Lorentz perpendicular action experiment, blogspot academia, and predicted an outcome using my corrected magnetic force law: the test coil should not rotate when its axle is parallel to y-axis (see Figure 1).

However, when I did the experiment, the test coil rotated! Was my prediction wrong?
This is why I have posted Fail of the perpendicular action experiment, blogspot academia

Please read the article at
Magnetized wire effect and perpendicular action experiment http://pengkuanem.blogspot.com/2013/04/magnetized-wire-effect-and.html
or
http://www.academia.edu/3188535/Magnetized_wire_effect_and_perpendicular_action_experiment

I have done an experiment named parallel action experiment, which shows the movement of a test coil in a magnetic field that is not allowed by Lorentz force law. Please see the video

The setup of this experiment is shown in Figure 1. The test coil carries a current that is influenced by the magnetic field B created by the magnet. The test coil, which is plane and perpendicular to its axle of rotation, can turn only in its plane. The video shows, when the current flows, signaled by the blinking of the led, the coil rotates in its plane.

Please read the article at
http://pengkuanem.blogspot.com/2013/03/blog-post.html
or
http://www.academia.edu/3116741/Theory_about_parallel_action_experiment

Does Lorentz force exert a force parallel to the current? NO. However, this experiment shows that, YES, it does exist a force parallel to the current. This experiment makes a plane coil turn in the magnetic field of a magnet. The axle crosses the plane of the coil perpendicularly in the center. Only force parallel to the current can make it turn.

First photography: Will this coil turn?
Second photography: The coil and the magnet.
Third photography: The led will turn on when current flows in the coil. The referential system of the setup.

Please see the video at
http://pengkuanem.blogspot.com/2013/03/lorentz-parallel-action-experiment.html

I have done an experiment that shows that magnetic force does not respect the Lorentz force law in the magnetic field of a narrow magnet. The video of this experiment is under this link:

In this article, I will explain the experimental result and the revealed flaw of the Lorentz force law.

Experimental torque

First, let us compare the theoretical prediction by the Lorentz force law with the experimental result. In Figure 1, the test coil is represented by the square coil carrying the current I placed in the magnetic field B. The experiment shows that, in the magnetic field of the magnet, the test coil turns about the x axis (part (a) in Figure 1), but not about the y axis (part (b) in Figure 1).

Please read the article at
http://pengkuanem.blogspot.com/2013/02/lorentz-perpendicular-action-experiment.html
or http://www.academia.edu/2700290/Lorentz_perpendicular_action_experiment_and_Lorentz_force_law

Dear readers and experimenters,

I have good news. After the fail of a first try of the Lorentz perpendicular action experiment, I have found the cause of the fail and modified the setup to get around it. This time I get a success. The video of this experiment is on Youtube under this link:

In this video, I have put
1) General photograph of the setup
2) General video of the test
3) Close-up video of the test coil’s movement
4) Photographs of the magnet and the test coil

Please read the article at
http://pengkuanem.blogspot.com/2013/02/success-of-modified-lorentz.html
or http://www.academia.edu/2624139/Success_of_the_modified_Lorentz_perpendicular_action_experiment