Magnetic Field Deflection Shield

Whenever a new technology emerges, humanity always thinks of using it in warfare.

Perhaps it was also a result of war anxieties. When the Positron Cannon appeared, the high command of the Armed Forces Department considered the issue of defense. Unfortunately, no normal material could directly confront positrons.

Therefore, when the super-strong magnetic field appeared, the long-dormant topic of discussion was brought back to the forefront.

Positron Cannon is a positron-based weapon that can defend against charged particles, so it's easy to think of a magnetic field.

I learned this in junior high school, or rather, in the ninth grade: charged particles moving in a magnetic field are subject to the Lorentz Force.

The direction of the Lorentz Force follows the left-hand rule.

Therefore, it is easy to imagine the working principle of Magnetic Force shield: two or more Magnetic Field Generator are installed on the warship, and the parameters of the Magnetic Field Generator are adjusted according to factors such as orientation, thereby forming a large magnetic field that surrounds the warship.

The technology has been developed, but it is still a complex project.

Just like having the technology to manufacture reinforced concrete, if you want to build a building, you still need to do various designs.

The same applies to Magnetic Shield.

As is well known, charged particles exhibit different motion properties when entering a magnetic field from different directions. The first type is when a charged particle enters the magnetic field parallel to it. In this case, the particle is not affected by the Lorentz Force and therefore moves in uniform rectilinear motion.

Secondly, when entering a magnetic field perpendicularly, the Lorentz Force is always perpendicular to the velocity, acting as the centripetal force. Therefore, the charged particle will undergo uniform circular motion under the action of the Lorentz Force.

The third type is when the object enters the magnetic field neither perpendicularly nor parallelly. In this case, the velocity needs to be broken down into components along the direction of the magnetic field and perpendicular to the direction of the magnetic field. After analyzing the components and combining them, it can be found that the resultant motion in this case is an equidistant spiral motion, and the trajectory is similar to that of a spring.

Compared to the first and second types, the third type is more suitable for complex combat environments, since no one can guarantee that the particle stream fired by the opponent is perpendicular to the magnetic field you set.

Of course, a real Magnetic Shield is much more complex than the third type; it's not as simple as just having a Magnetic Field Generator.

Because the positron beams need to be considered from all directions, scientists have incorporated many adjustable Magnetic Field Lines direction parameters into several Magnetic Field Generator when designing the Magnetic Shield, and it cannot be just a single magnetic field.

Furthermore, the several Magnetic Field Generator need to ensure that the Magnetic Field Lines between them form a larger magnetic field, rather than a chaotic magnetic field.

This raises the design requirements by a significant margin.

Various parameters must be precise to an appalling degree. For example, where to place the Magnetic Field Generator, which of the several Magnetic Field Generator needs to produce a stronger magnetic field, and how to fine-tune the direction of the Magnetic Field Lines when the warship moves or turns—all these require repeated experimentation by scientists. It's necessary to start with experimental models and small magnetic fields. Only after obtaining these complete parameters can the manufacture of a real Magnetic Field Generator for warships begin. It's impossible to simply say it's possible and then directly create a large magnetic field and equip it to the warship.

In addition, humans also need to consider the issue of magnetization.

Magnetization is the phenomenon that a material exhibits a certain degree of magnetism when it is subjected to a magnetic field, due to the tendency of the Magnetic Moment in the material to align in the same direction.

This is a problem that causes great headaches for humanity.

Contrary to popular belief that only iron can be magnetized, everything in the universe can actually be magnetized. This is because almost all matter in our universe possesses Magnetic Moment.

As mentioned earlier, a strong magnetic field laboratory can levitate frogs. This is because the frogs are magnetized in a magnetic field with an intensity of 16T.

The Magnetic Shield used on warships are far more powerful than this magnetic field, so humanity has to consider the issue of magnetization of everything inside the warship, including the human body.

In other words, if we disregard magnetization, once the Magnetic Shield is activated, before the enemy's Positron Cannon even fire, the equipment and personnel inside the warship will be completely magnetized. All electronic equipment will malfunction as a result, and those exposed to the strong magnetic field will die.

To be killed by your own shield would be a huge joke.

Therefore, if a warship wants to install Magnetic Shield, it must make all the necessary preparations to prevent magnetization.

So how do we do it?

This is certainly not a problem for human scientists. Preventing magnetization is, in other words, shielding electromagnetic fields, so the first thing scientists thought of was Magnetic Shielding Material.

As the saying goes, only magic can defeat magic.

Humans use powerful electric currents to generate strong magnetic fields, thus obtaining Magnetic Shield. Therefore, only electromagnetic fields can shield this electromagnetic field.

It is conceivable that this Magnetic Shielding Material is also made of metal.

Its basic principle is to confine Electromagnetic Wave to a certain area through shielding bodies such as shells, boxes, and plates made of metal.

Of course, Magnetic Shielding the entire interior is far more complex than this.

Scientists need to know all the information about the magnetic field source, including where it generates the field in space, whether it is a single field or multiple fields superimposed, where the boundary between the far field and the near field is, the characteristics of the field source and the differences in its propagation properties, the energy density of the field source, and so on.

After mastering various parameters, scientists can analyze the fields generated by electric dipoles and magnetic dipoles, and then derive the near and far fields of the actual field source, as well as the wave impedance and field characteristics of the near and far fields, thereby providing various corresponding parameters for the shielding field.

Only in this way can shielding materials, or shielding devices, be manufactured to match the Magnetic Shield.

Yes, it is both a material and a device, because the principle of Magnetic Shielding is to use high magnetic permeability materials to form a magnetic circuit, allowing the interfering magnetic field to pass through the shielding body, thereby avoiding the interference of the interfering magnetic field on the outside of the shielding body.

Specifically, when the shield is close to the magnetic field source, it will sense the magnetic field of the magnetic field source and generate a corresponding induced current in the shield.

This current will generate an opposite magnetic field in the shield, which will weaken the interference of the external magnetic field source on the magnetic field inside the shield, thereby achieving the Magnetic Shielding effect.

Therefore, Magnetic Shielding and Magnetic Shield must be part of the same system. This is because on the battlefield, Magnetic Shield cannot maintain the same Magnetic Field Lines direction forever.

This so-called Magnetic Shielding Material is actually a type of superconducting material.

Therefore, it is obvious that the Magnetic Shield generator cannot be placed in the center of the warship.

In the engineers' design, the Magnetic Shield generators should be distributed at the front, rear, top, and bottom of the warship, outside the internal compartments and various equipment compartments of the warship.

Therefore, it is obvious that the layout of a warship equipped with Magnetic Shield should be like this: the outermost layer is the armor layer, which is embedded with various weapons and detectors. Inside the armor layer is the interlayer where the Magnetic Field Generator is located. Further inside is the Magnetic Shielding Layer made of superconducting materials, then the shipborne equipment layer, then various heat insulation layers, radiation protection layers, and finally the personnel activity layer.