Bright Sword starts with the grenade flat.

Chapter 479 The Principle of Lightsaber

Of course, Liu Xiu took the hilt of the lightsaber from Kane not because he wanted to use it himself.

After all, if Kane wants to use this lightsaber, he can't just grab the hilt of the lightsaber.

In order to use it, you need the spiritual energy collection belt around Kane's waist.

That’s right, the lightsaber in Kane’s hand is actually divided into two parts, one of which is the hilt of the lightsaber that Liu Xiu is holding in his hand now.

The hilt of the sword looks like a real laser and can be used in lightsaber combat.

However, in fact, the blade of the lightsaber is not light or laser, but magnetically confined plasma. It can expand and contract. In fact, the magnetic field controls the expansion and contraction of the plasma. As for why people can fight with lightsabers, it is actually caused by the mutual collision of the confined magnetic fields.

Of course, in addition to appearing in the Lost Universe, lightsabers have also appeared in Star Wars movies.

The lightsaber in the movie consists of a hilt and a blade, and the blade of the lightsaber is not an ordinary laser, but magnetically confined plasma.

Plasma can be found everywhere in the universe and is called the fourth form of matter besides solid, liquid and gas.

You should know that matter is composed of molecules, molecules are composed of atoms, atoms contain internal nuclei and external electrons, and the three forms of matter, solid, liquid, and gas, are actually determined by the distance between molecules.

However, when matter is heated to a sufficient temperature or affected by other factors, the negatively charged electrons orbiting the nucleus in the atom break away from the constraints of the nucleus.

Then, positive ions that have lost electrons, negative ions that have attached electrons, and negatively charged free electrons are formed, which means that ionization has occurred. After ionization, the positive and negative ions mix, move randomly, and collide, which is called plasma.

In the universe, numerous stars and other high-temperature planets continuously heat matter to produce plasma. At the same time, the boundless low-density space gives ions enough distance to move freely so that they will not fully recombine and turn back into neutral particles due to too frequent collisions. These factors lead to the existence of a large amount of plasma everywhere in space.

But whether in the Star Wars movie or the anime Lost Universe, the luminous blade of the lightsaber is released from the hilt and can be retracted back into the hilt.

So what makes the plasma stretch and shape into a cylindrical lightsaber?

It turns out that plasma is composed of constantly moving, charged ions and electrons. When charged particles move in a magnetic field, if they do not move in parallel, they will be affected by the Lorentz force that changes the direction of their movement due to electromagnetic interactions.

In the absence of other forces, a continuously rotating spiral motion will be formed. By using a very strong magnetic field, charged particles can be confined within a certain range.

On the other hand, if a mass of plasma has strong movement and there is no external force, the magnetic field in it cannot leave the plasma. This is called magnetic freezing.

In fact, plasma, the main material in lightsabers, has long been used on the Wandering Blue Star, because plasma technology is widely used in mechanical processing, surface treatment and other processes, especially plasma cutting, which is more convenient and easier to use than oxygen cutting and laser cutting.

In space, plasma and magnetic field are inseparable. The sun's atmosphere, the corona, is in a plasma state, and the sun has a very strong magnetic field.

Sunspots are areas on the sun where the magnetic field is very strong. The solar prominence phenomenon in the solar atmosphere is a ring-shaped phenomenon that is bound by the magnetic field and forms along the magnetic field lines. This is similar to the shape of the lightsaber in the movie. Of course, sunspots are just a phenomenon that appears randomly, while lightsabers are something that humans can control. The sun's plasma continues to flow into the vast empty space, so the sun's magnetic field is naturally frozen accordingly.

Of course, when the wandering blue star is still in the solar system, although there is no plasma, there is also a very strong magnetic field. When these plasmas from the sun reach the vicinity of the blue star, the magnetic field of the blue star interacts with the frozen solar magnetic field to block these plasmas!

After all, you have to know that such high-energy, high-speed, and high-density plasma is harmful to human, animal, and plant life. It is precisely because the blue planet's own magnetic field intercepts the sun's plasma that there is a saying that the blue planet's magnetic field is the cradle of life.

In the movie, the lightsaber consumes energy only when the blade cuts through an object. It is truly an indestructible "hot" blade. It does not release heat when it is not in contact with an object, so it is usually a cold sword.

Of course, the plasma in the universe is also cold and hot. The temperature is the intensity of the thermal motion of the object's molecules. The faster the molecules move, the higher the temperature.

Plasma is composed of ions and electrons, and their speed also determines the temperature of plasma, which is divided into high-temperature plasma and low-temperature plasma. The mass of ions and electrons in plasma differs by a thousand times. Sometimes ions and electrons can have different speeds, and therefore different temperatures. If they have the same temperature, it is called hot plasma, otherwise it is called cold plasma.

In Star Wars, lightsabers are indestructible and there is nothing they cannot cut, except another lightsaber.

After all, when a lightsaber cuts another lightsaber, what is cut is not plasma, but the collision of the constrained magnetic fields that the lightsabers can see.

Of course, before Liu Xiu obtained the lightsaber technology, he obtained the mecha arm holding a lightsaber that was cut off by Kane at the black market auction house in the full metal satellite.

The plasma technology in the Wandering Blue Planet is certainly not that advanced, but the Wandering Blue Planet was still very good in equivalent plasma technology before this.

For example, plasma machining, welding, cutting, metallurgy, chemical engineering, surface treatment and other processes have been widely used in our society today and are emerging and very promising industrial technologies.

The lightsaber on the arm of the mecha that was cut off by Kane and that Liu Xiu brought back did give great inspiration to the scientific research department of Wandering Blue Star.

Just before Liu Xiu came here, the research institute of Wandering Blue Star had already dismantled the lightsaber on the arm of the Space Alliance mecha and made its own lightsaber.

Of course, it can be manufactured, but such a lightsaber has a huge flaw that cannot be avoided.

And this lightsaber made by the Wandering Blue Star in imitation of the Cosmic Alliance naturally fell into the same problem as the Cosmic Alliance.

That is the energy problem of the lightsaber. That's right, since the lightsaber is composed of high-temperature plasma and a strong magnetic field, the creation of high-temperature plasma and the strong magnetic field that confines the high-temperature plasma naturally cannot avoid a problem, that is, how to obtain a device that can output powerful energy and at the same time be small enough.

It would be best if its size was small enough to fit into the hilt of a lightsaber, but unfortunately, even Liu Qi's latest research on nuclear fission batteries cannot do it.

Because if you want to keep the lightsaber at least one meter long, you need at least ten fist-sized nuclear fission cells to provide energy at the same time to keep the lightsaber's plasma and strong magnetic field working normally.

(End of this chapter)