"On, recapture our hometown of Sandora. ”

"Kill. ”

Hundreds of figures with white wings behind their backs, holding various weapons, quickly rushed towards the leafy island in front of them.

"Stop them. "On the edge of the green island, there are also hundreds of figures with white wings on their backs, but obviously much more luxuriously dressed than these people who rushed over, and they are also holding various weapons, and they meet these people.

The fierce battle between the two sides unfolded above the white sea and the green island, the sound of guns and cannons resounded in the sky, and a large number of figures fell from mid-air.

Both feet are dressed in similar gear, which is similar to boots, allowing people to jump very high and glide short distances in the air.

Ye Wuji, who was about to go to Bicca, happened to pass by here, and after watching the battle between the two sides for a while, he shook his head slightly, and set his eyes on the green island in front of him.

Except for the spear and knight spear used by the leader, most of the others used guns and rocket artillery, but except for the ordinary guns, there was no change, and the other weapons were integrated with the unique technology of the sky island, the sky island shell.

The equipment on the feet is equipped with a jet shell, and the rocket launcher does not fire a shell, but a powerful shock wave.

There is also a large flame emitted from the palm of the hand, and at first glance, it is the use of Yanbei.

It's a pity that although the shell is very powerful, but there is no particularly powerful strong man on both sides, the battle depends on the quality of their own bodies and shells, the only thing that surprised Ye Wuji is the whole body armor, which is called a god by his subordinates, is a heavenly horse, to be precise, it should be a Tiandian bird that has eaten the fruit of the horse and horse, in the beak, it can also be called the horse's mouth There should be a flame shell inside, which can breathe fire.

The reason why the two sides fought was to fight for this green island, and for some reason, a green island appeared in the White Sea, which is really a battle for every inch of land for the residents of the White Sea who rarely see the land.

Angel Island is the name of the island near the White Sea, and the inhabitants of the island have short white wings on their backs, which is completely different from the white wings on their arms that they saw on other empty islands before Ye Wuji.

"Sandora. While the two sides were still fighting, Ye Wuji walked on the green island curiously.

"Wow, it's gold everywhere. Ye Wuji, who walked into the center of the island, looked at everything in front of him in surprise, what appeared in front of Ye Wuji was an abandoned city, which was nothing, but on the ground in front of him lay a huge golden-colored pillar nearly ten meters long and about one meter wide, which surprised Ye Wuji.

This is a real pillar made of gold, and the value of such a large gold column is almost immeasurable.

"It's mine. "Not only the gold pillar, but most of the other decorations around it are also made of gold, and for the first time, Ye Wuji experienced the feeling of picking up gold and picking it up.

"What a big golden bell. After picking up a lot of gold, Ye Wuji walked to the high platform, pushed aside the vines around him, and Ye Wuji saw a huge golden bell that was no less than the previous golden pillar.

"This is, historical text, Roger. Underneath the golden bell, Ye Wuji saw a huge cube of stone, although he didn't recognize the text on it, but at a glance he knew that it was the text of history, not to mention that on the stone on the side, Ye Wuji also saw the handwriting left by Roger.

"It's still here. Seeing this piece of historical text, as well as the handwriting left by Roger on the side, Ye Wuji's memory of this place finally recovered.

This is supposed to be the place where Luffy and Thorgod Anilu will fight in the future, and the owner of the Thunder Fruit who is naturally the owner of the Thunder Fruit was beaten away here by Luffy, who was born with his natural nemesis rubber fruit.

"It turns out that the golden pillar was used to ring the golden bell. ”

"Forget it, leave some for Luffy. "Night Mowgli, who originally wanted to take the golden bell away, gave up the idea after thinking of Luffy.

Boom, boom, boom.

Ye Wuji held up the golden bell with both hands and slammed into the golden bell, and in an instant, the loud bell resounded throughout the Baibai Sea, and countless people on the empty island heard this loud, magnificent, and huge bell.

As the golden bell continued to ring, some people in Qinghai, 10,000 meters below, also heard this loud sound.

"Listen, Boss. ”

Qinghai, Wenbrankulik, who had just come out of the deep sea, opened his mouth in astonishment after hearing this voice, looked at the sky in disbelief, and the cigarette that had just been lit in his mouth immediately fell to the ground.

"Didn't you sink into the sea, but rose into the sky? Vinblanculik, as he spoke, began to cry out loud, and many years of hard work were finally not in vain.

"Who is it?" the two sides that were fighting near the green island stopped fighting in unison after hearing this voice, and then rushed to the island together.

It's a pity that at this time, Ye Wuji has already moved towards Bika with a large amount of gold he has picked up.

"Is this Bika, it's really hilarious. "This time there was no delay on the way, Ye Wuji came to Bika very smoothly, it is worthy of being the holy land of the legend of the empty island, Bika is the most lively one of the empty islands that Ye Wuji has seen along the way.

It is not only the locals of the Sky Island who appear in Bika, but also a large number of Qinghai people, except for a few who come here with curiosity, the rest of the people are basically here to purchase all kinds of rare shells, which are all scarce materials.

Bika, the whole island is biased towards the mechanical style, with a large number of gear-like buildings, and in the very center, there is a nine-story tower, all kinds of strange shells, such as platoon shells, laser shells and other shells, basically flow from the tower.

"Yunbei. Ye Wuji walked into a shell store, picked up an item like a sword hilt, and as soon as he pressed the button on it, a white cloud emerged from the hilt, forming a white cloud sword.

And it's also a retractable white cloud sword.

In fact, this kind of cloud shell, which should be called iron cloud shell, has the quality of the cloud and the hardness of iron, and is a very convenient weapon to carry, but because the price is very expensive, except for a few rich people, ordinary people cannot afford this kind of cloud shell.

Of course, Ye Wuji didn't care about the price, and directly purchased all kinds of shells.

Unlike other empty islands, most of the shells that Bika buys and sells are used for fighting, and there are very few shells for life here.

"Let's go, I heard that there will be an auction of Pai Shells today, which is made by Anilu, the first craftsman of Bica, and the power is three percent higher than that of ordinary Platoon Shells. ”

Ye Wuji, who was about to look around, couldn't help but be stunned when he heard the name Anilu, the name Anilu Ye Wuji remembered it very clearly, after all, it was the owner of the natural thunder fruit, but what was the first craftsman Anilu, it made Ye Wuji confused.

"Is that Anilu? Following the others to the square of the nine-story tower, Ye Wuji did not participate in the auction of the Pai Shell, but carefully looked at Anilu standing there, and at the same time compared it with the impression in his mind, but no matter how you look at it, this Anilu does not look like the Thor who fought with Luffy.

After all, this Anilu is too young, but since it is called Anilu, Ye Wuji is ready to wait for the investigation, in case there is a chance to snatch the Thunder Fruit from Anilu, it will be a big profit.

"I don't know what the world government and the navy's top brass are doing, but it is completely possible to apply the shell technology of the air island to the navy, and it can definitely greatly improve the combat effectiveness of the navy. ”

It's a pity that these thoughts are just Ye Wuji's thoughts, after becoming a vice admiral of the Navy Headquarters, Ye Wuji understands why the equipment of the middle and lower levels of the Navy is so far behind, and the military expenditure is insufficient.

"Hahaha. "In the island of Bica, a very large and luxurious villa, there is a very arrogant laughter from Anilu.

"It's finally here, and the heavens are also favoring me, and in the final stage of the plan, they actually sent me such a gift. On a very peculiar cloud sofa, Anilu looked at the peculiar fruit in his hand, his face was excited and excited.

The fruit in Anilu's hand, which looks like a solid thunderbolt shape, is the natural thunder fruit.

Thunder and lightning is a majestic and somewhat intimidating electrical discharge phenomenon accompanied by lightning and thunder. Thunder and lightning are generally generated in cumulonimbus clouds with strong convection, so they are often accompanied by strong gusts of wind and heavy rain, and sometimes hail and tornadoes. The top of the cumulonimbus cloud is generally high, up to 20 km, and the upper part of the cloud often has ice crystals. Processes such as the attachment of ice crystals, the breaking of water droplets, and the convection of air cause electric charges to be generated in the clouds. The distribution of charges in the cloud is more complex, but in general, the upper part of the cloud is dominated by positive charges and the lower part is dominated by negative charges. As a result, a potential difference is formed between the upper and lower parts of the cloud. When the potential difference reaches a certain level, an electric discharge will be generated, which is our common lightning phenomenon. The average current of lightning is 30,000 amps, and the maximum current can reach 300,000 amps. The voltage of lightning is high, about 100 million to 1 billion volts. A moderate thunderstorm can reach 10 million watts, which is equivalent to the output of a small nuclear power plant. During the discharge, due to the sudden increase in temperature in the lightning channel, the volume of air expands dramatically, resulting in a shock wave that causes a strong thunderclap. When a charged thundercloud comes close to a protrusion on the ground, a violent discharge occurs between them. At the site of the lightning discharge there will be a strong flash of light and the roar of an explosion. This is the lightning and thunder that people see and hear.

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Burst lightning

There are four types of lightning: direct lightning, electromagnetic pulse, spherical lightning, and cloud flash. Among them, direct lightning and spherical lightning will cause harm to people and buildings, while electromagnetic pulse mainly affects electronic equipment, mainly caused by induction, and cloud flashes occur between two clouds or on both sides of a cloud, so they are the least harmful to human beings.

Direct lightning is to accumulate a lot of electric charges on the cloud, and a large number of electric charges have to find a channel to vent, sometimes it is a building, sometimes it is an iron tower, sometimes it is a person in an open place, so these people or objects become a channel for the discharge of electric charges, and the person or building is injured. Direct lightning is the most powerful lightning, while spherical lightning is less powerful than direct lightning.

Formation of thunderclouds

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The condition for the generation of thunder and lightning is that there is accumulation in the thunderstorm cloud and polarity is formed. Scientists have made a large number of observations and experiments on the charging mechanism and the regular distribution of electric charges in thunderstorm clouds, accumulated a lot of data, and put forward various explanations, some of which are still debated today.

1. The "ion flow" hypothesis in the initial stage of convective clouds

There are such a large number of positive and negative ions in the atmosphere, and the charge distribution on the raindrops in the clouds is uneven, with the outermost molecule being negatively charged, the inner layer being positively charged, and the potential difference between the inner layer and the outer layer being about 0.25 V higher. In order to balance this potential difference, the water droplets must preferentially absorb negative ions from the atmosphere, which gradually causes the water droplets to take on a negative charge. When convection begins, the lighter positive ions are gradually carried to the upper part of the cloud by the rising air current, while the negatively charged cloud droplets remain in the lower part because they are heavier, causing the separation of positive and negative charges.

Natural phenomenon - thunder and lightning (20 photos)

2. Charge accumulation of cold clouds

When the convection develops to a certain stage, after the cloud extends above the height of layer 0c, there are supercooled water droplets, graupel grains and ice crystals in the cloud. This kind of cloud, which is composed of water vapor condensates of different phases and has a temperature below 0C, is called a cold cloud. The charge formation and accumulation processes of cold clouds are as follows:

1. Supercooled water droplets on the graupel and freeze and become electrified

In the heavy clouds, there are many water droplets that do not freeze when the temperature is below 0C, and this kind of water droplets are called supercooled water droplets. Supercooled water droplets are unstable and freeze as soon as they are gently shaken. When supercooled water droplets collide with graupel, they freeze immediately, which is called collision freezing. When a freeze occurs, the supercooled water droplet immediately freezes into an ice crust on the outside, but its interior remains liquid temporarily, and the temperature of the liquid supercooled water inside is higher than that of the outer crust due to the latent heat transferred from the outside to the interior. The difference in temperature causes the frozen supercooled water droplets to be positively charged on the outside and negatively charged on the inside. When the interior freezes, the cloud droplets expand and split, and the outer skin breaks into many positively charged ice chips, which fly to the upper part of the cloud with the air current, and the core part of the negatively charged frozen droplets attaches to the heavier gragun, making the graupel negatively charged and remaining in the middle and lower part of the cloud.

2. The friction between the ice crystals and the graupel particles collides and causes electricity

Graupel is made up of frozen water droplets, which are white or milky white and have a relatively crunchy structure. Since cold water droplets often collide with it and release latent heat, it is generally hotter than ice crystals. Ice crystals contain a certain amount of free ions (oh- and H+), and the number of ions increases with increasing temperature. Due to the temperature difference between the graupel and the ice crystals, there must be more free ions at the high end than at the low end, so the ions must migrate from the high temperature end to the low temperature end. On ion migration, the positively charged hydrogen ions are faster, while the negatively charged, heavier hydroxide ions are slower. Therefore, there is a surplus of hydrogen ions at the cold end for a certain period of time, resulting in a negative polarization at the high temperature end and positive at the low temperature end. When the ice crystals come into contact with the graupel and then separate, the warmer graupel becomes negatively charged, while the cooler ice crystals become positively charged. Under the action of gravity and updrafts, the lighter positively charged ice crystals concentrate in the upper part of the cloud, while the heavier negatively charged graupel particles stay in the lower part of the cloud, resulting in the upper part of the cold cloud being positively charged and the lower part negatively charged.

thunder

3. The water droplets are electrified because they contain thin salts

In addition to the above two mechanisms of electrification of cold clouds, it has also been proposed that the mechanism of electrification due to the presence of thin salts in water droplets in the atmosphere has also been proposed. When a cloud droplet freezes, the ice lattice can contain negative chloride ions but repel positive sodium ions. Thus, the frozen part of the water droplet is negatively charged, while the unfrozen part is positively charged (the water droplet freezes from the inside out). As the graupel particles formed by the freezing of water droplets fall down, the water that has not yet had time to freeze on the surface is dropped, forming many small positively charged cloud droplets, while the frozen core part is negatively charged. Due to the separation of gravity and air currents, the small droplets of the electric positive point are carried to the upper part of the cloud, while the negatively charged graupel particles stay in the middle and lower parts of the cloud.

3 Charge accumulation of warm clouds