Railguns use electromagnetic force to propel cannonballs, a kinetic energy weapon with huge destructive power. Before Hogu traveled through time, this was a new concept of science fiction weapon, and it only appeared in science fiction movies and novels.

Unlike traditional cannons that use violent chemical reactions to provide propulsion, the railgun itself does not need to consider the powerful shock waves generated by chemical explosions and the smoke after the reaction.

Whenever traditional artillery wants to increase the power of the artillery, it is necessary to lengthen the barrel to stabilize the ballistic trajectory, and to increase the charge of the artillery shell to provide a more powerful propelling force of the artillery shell.

All in all, the volume needs to be larger and larger.

It's okay if it's just like this, but once it is put together with another physical law, the problem becomes very serious.

The strength of an object will become fragile as the shape enlarges. The fundamental reason is that the internal stress increases, and the strength provided by the atomic bonds can only barely compete. Once external forces amplify the stress, it exceeds the atomic bonds themselves.

If the power it can provide, the object will disintegrate.

Therefore, the artillery barrel needs to be thickened because it has to resist the shock wave generated by the explosion of the artillery charge.

But railguns do not need to consider this problem, so when Hogu was still on Earth, this type of cannon was generally favored by various countries.

The only problem that prevents countries from popularizing this kind of cannon into the military is energy. The consumption of electrical energy is too great. The essence of the railgun is to convert electrical energy into kinetic energy to propel the projectile.

On a chaotic battlefield filled with artillery fire, a cannon connected to a nuclear power plant in the rear area was undoubtedly a bad idea. The maneuverability alone was enough to make military generals turn around and leave.

But Huo Gu doesn't need to think about this.

Energy supply? Chemical energy is being used to generate electricity in every corner of the earth's surface, including the seafloor. There are power stations on the surface of the entire planet to supply energy to railguns. Low-temperature superconductors using dry ice are built in rhizomes, which are lossless and have global coverage.

The energized wire is now complete.

It was in order to build these that Huo Gu completed the design of the Sky Eye's projection into space in a perfunctory manner, directly applying the design layout of the Earth's rocket.

When the rotation of the planet turned the direction of the railgun's muzzle to point at the alien fleet, Hogu's order was given.

"emission!"

After the command is given, the fist-sized metal body begins to accelerate under the action of the electric field.

Because it has to fight against the gravity of the planet itself, the speed of the metal body can only increase by one meter per second for every meter it travels. Air resistance is negligible. In order to avoid friction and heat, which would cause the entire giant structure to spontaneously ignite, Hogu placed the internal

All the air has been evacuated, leaving it in a vacuum state. The muzzle has penetrated deep into the escape layer, so there is no need to worry too much about air entering from top to bottom.

The length of the railgun has reached a length of 1000km. Even humans on earth have never mastered this monster-like material science.

This is what Huogu has accumulated over such a long period of time since time travel, and it is also the reason why Huogu didn’t ask Perpetuity and the others to study chemistry in the first place.

The essence of chemistry is the atomic bond structure connecting atoms to each other. The entire macroscopic world is constructed by losing and gaining electrons. More essentially, it is the ‘electromagnetic force’, one of the four forces on the microscopic scale.

With this understanding, Hogu has been constantly trying various types of atomic combinations since the Hadean Eon. As long as they are atoms that can be obtained on the planet, he has basically combined them once.

Huogu's understanding of chemistry is as difficult as a child's understanding of assembling building blocks, let alone such a long period of accumulation.

According to the conversion, the length of the railgun barrel is approximately equal to the speed of the projectile itself, which means that the initial speed of a fist-sized projectile when leaving the muzzle is 1000km/s.

What kind of concept is this?

This is one-third of the speed of light, and the accelerated projectile itself has a mass of 10kg, and the kinetic energy has reached 5x10^11 Joules. If the energy released by a nuclear bomb is constrained to the size of a fist, basically no atomic bonds can

Can withstand this level of kinetic energy.

The key is that there is more than one projectile launched into the universe. Due to the special nature of the railgun itself, there is no need to consider the tightness of the explosion chamber. The method of releasing the projectile is extremely similar to the 'Metal Storm' that was once famous on the earth.

Similarly, it doesn't matter if the distance between projectiles advancing in orbit is reduced to one decimeter. Because of the vacuum environment inside the barrel, there is no need to consider the cavitation effect.

There was not only one similar building, so the scene displayed was a terrifying barrage with a speed reaching one-third-hundredth of the speed of light, with 500 billion fist-sized projectiles being projected.

However, although these projectiles are extremely powerful, it still takes seventy or eighty hours to hit the target, which gives the alien fleet time to react.

The announcer's urgent report echoed in the bridge.

"Commander! The radar echo scanned a large number of objects approaching at high speed! The speed is 1000km/s! Launch direction, target star!"

"Tell the entire ship to change course, form a dispersed formation, and increase the distance between them."

The fleet commander gave the order very calmly, his eyes fixed on the projector. What appeared on it was a blood-red warning sign approaching his own fleet at high speed.

The time was the fifth hour after Hogu launched those metal projectiles. Since the two parties were approaching at high speed, the relative speed was higher and the encounter time was shorter.

Even on the bridge, the aliens could clearly feel a slight earthquake. It was obvious that the spacecraft had been hit.

"The vibration armor was damaged in thirty places!"

“Good airtightness!”

"The engine group is normal!"

"The life support system is normal!"

"Four turrets damaged!"

…

The reports came one after another, and the commander's tense expression showed a little relaxation, and he asked immediately.

"What's going on with each ship?"

"Six ships have been confirmed damaged due to too many hits. Three ships are undergoing repairs due to hitting vector nozzles, which may affect the deceleration of the spaceships behind them. The other ships were spared because of your previous command to turn on vibrating armor.

It’s difficult, it’s just that the vibration armor is damaged.”

The commander nodded slightly and gave the order again.

"Instruct the maintenance team as soon as possible to repair the vibrating armor. This kind of attack can never be just once. Each ship must maintain its current dispersed formation and do not change."

"yes!"

If Huogu knew the result of this attack, he would probably jump in anger, if it had legs.

Although it cannot be said that he had high hopes for this wave of attacks and thought that he could win or lose in one go, the results this time were far lower than Huogu's original expectations.
Chapter completed!