# Unhappiness of Newton with Lorentz and triangular coil experiment

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

Unhappiness of Newton with Lorentz and triangular coil experiment
http://pengkuanem.blogspot.com/2013/05/unhappiness-of-newton-with-lorentz-and.html
or

# Numerical computation of the Lorentz force internal to an asymmetric coil

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.

Numerical computation of the Lorentz force internal to an asymmetric coil
http://pengkuanem.blogspot.com/2013/04/numerical-computation-of-lorentz-force.html
or

# Unknown properties of magnetic force and Lorentz force law

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.

# Magnetized wire effect and perpendicular action experiment

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

Magnetized wire effect and perpendicular action experiment http://pengkuanem.blogspot.com/2013/04/magnetized-wire-effect-and.html
or

# Theory about parallel 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.

# Lorentz 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.

http://pengkuanem.blogspot.com/2013/03/lorentz-parallel-action-experiment.html

## Corrected law and Perpendicular action experiment

In my Lorentz perpendicular action experiment, (see Lorentz perpendicular action experiment and Lorentz force law, blogspot academia) the movement of a test coil proved experimentally that the magnetic force on it does not verify the Lorentz force law and in consequence, showed a flaw of the law.

In this experiment, the magnetic field of a magnet exerts a force on the test coil and makes it turn (see Figure 1). According to the Lorentz force law, the test coil should turn about the axle whether it is parallel to x-axis or y-axis. But the experiment showed that it does not turn when the axle is parallel to y-axis.

In the following, I will explain the experimental result using the corrected law of magnetic force that I proposed in Correct differential magnetic force law, blogspot acdgemia, and show that this law describes well the movement of the test coil.

# Lorentz perpendicular action experiment and Lorentz force law

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).

# Success of the modified Lorentz perpendicular action experiment

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

I have a bad news: I have carried out the Lorentz perpendicular action experiment, blogspot http://pengkuanem.blogspot.com/2012/12/lorentz-perpendicular-action-experiment.html