After nightfall, the veterans of Liaodong who had fled into the mountains returned to the floating island camp one after another. Pen, fun, pavilion www. biquge。 info

Some soldiers who participated in the bitter battle scolded these people: "You still know that when you come back, why don't you die in the old forest?" ”

The veteran asked, "What do I eat in the woods?" ”

The floating island turned into a large workshop.

The craftsmen who supported the front line went to the floating island, and they not only had to make eight general cannon curved gun mounts overnight, but also rushed to make a large number of ground guns.

The curved wooden turret of the military cannon still uses a simple fixed firing angle. A thick copper wire is spot-welded with a battery on the gun body and bent into an angled pointer. The gunner observes whether the pointer and the plumb line of the gun hull coincide to determine whether the barrel is at a suitable firing elevation angle. At the same time, in actual combat, a rough adjustment of the launch elevation angle can be made by using the surge of the floating island platform.

Since the ground cannon is triggered by the enemy's stomping, it can be closer to the enemy, so it does not need to be as big as a regular wooden cannon. The craftsmen rushed to make short wooden cannons overnight, and as soon as they were done, they handed them over to the soldiers of the third battalion to bury them in the passage to the north of the mountain.

Three battalions came and went with torches on the road. Not only did they bury the newly made wooden cannon in the ground, but they also took out the wooden cannon that had not had time to ignite on the hillside of the original access road and changed it to a stampede-triggered type.

Even so, the number of wooden cannons was far from enough, and the third battalion dug pits and piled up soil first. On the one hand, it prepares for the buried ground artillery in the future, and on the other hand, it makes it difficult to distinguish the real from the fake ground artillery that has been buried, and at the same time makes the Qingshanzui passage difficult to walk.

On the east bank of the Yellow River north of the Qingshanzui Passage, an armored raft shot out from time to time Sun Yi's bright flashlight columns, sweeping around the coastal artillery positions and vigilantes of the Aixinguo with impunity.

It was a mental battle led by Daoist Jia.

Jia Daoshi said that the soldiers of Aixinguo did not know this thing, and they must panic when they suddenly saw the strong light shining in the dark night. In this way, at least tonight, Aixin will never dare to make a mistake.

For Sun Yi, today is the longest day.

He was too tired to do anything, but he still insisted on visiting the floating islands in person. On the one hand, it does on-site general technical support for the craftsmen, and on the other hand, it cooperates with Jia Daoist to pretend to be a ghost and scare Aixinguo.

After the craftsmen finished welding the copper pointers with an electric welding machine, Sun Yi took over the electric welding machine.

Sun Yi ordered someone to remove the copper electrode that generated the arc of the original welding machine and replace it with a newly made graphite electrode.

Graphite was collected by Sun Yi from the women of poor people's families, who painted their eyebrows with this cheap graphite that could not be used on the table.

Graphite is ground into powder, mixed with clay and put into the kiln to burn into graphite electrodes.

The electrode chopsticks are one foot long, with one pointed end and one flat end.

Now the two graphite electrodes are fixed on the welder with the tips facing each other, and they are fixed to the welder with a wooden frame.

On the side of the huge copper plate capacitor and battery pack of the welding machine, Sun Yi ordered someone to install the tram.

The craftsmen have made improvements to Sun Yi's original tram.

In order to strengthen the magnetic field of the tram, the wooden frame around the tram shaft is filled with various large and small magnet rods and electromagnets, and a big hedgehog is alive.

There is no resemblance between this type of electric car and the electric motors of later generations. It's more like a strange piece of big furniture.

After connecting the circuit, Sun Yi ordered the tram to be turned by manpower. He used the motor as a generator to charge the copper plate capacitors.

It felt almost like that, Sun Yi put on sunglasses, asked people to light the torch, and wrapped his right hand in clothes.

The craftsmen attracted Sun Yi's strange behavior of wearing sunglasses by lighting a light in the night, and they gathered over to see what Lord Lidel was going to do.

Sun Yi ordered someone to close the circuit, and the place where the tips of the two graphite electrodes met Mai Mang began to turn red rapidly.

This is because the resistance is greatest here, the voltage is all concentrated here, and the temperature rises rapidly.

Sun Yi slowly widened the distance between the electrodes through his clothes.

An arc jumps out!

Sun Yi still felt his eyes glaze out through his sunglasses.

The onlookers exclaimed in unison.

The graphite electrodes sizzled and emitted a wisp of black smoke, emitting an unpleasant smell.

The entire floating island, including the mountain beams near the floating islands, including the hillsides near the mountain beams, was as bright as day for a moment, and the grass, trees, and leaves on the hillsides could be seen clearly. It's even too clear, too clear.

Sun Yi immediately ordered to merge into the battery pack, and the strong labor in charge of manpower to turn the tram should not stop, and if he was tired, he would change to someone else.

Sun Yi turned his back to the arc and took off his sunglasses, only to find that a group of craftsmen were rubbing their eyes.

Sun Yi was a little embarrassed, he was so tired that he forgot to tell everyone not to look directly.

"This is called an arc lamp", as compensation, Sun Yi explained the principle here.

"In fact, the principle of arc lamp is the same as that of battery arc ignition, and electric welding machine uses arc welding. It's just that the arc of the arc lamp lasts longer and consumes more power, so I use capacitors, batteries, and trams to power the arc lamps at the same time. ”

Arc lamps are also called arc lamps. At the beginning of the 19th century, it was invented by Humphrey Davy of England. He connected the battery with wires and then connected to two carbon poles that were very close together, and because of the arc, a dazzling light was created between the two poles.

Arc lamps have certain drawbacks that make them not widely available. The light, including the arc, is too dazzling, and the general brightness is 200 times that of the white lamp of later generations; When the charcoal pole is fired, it will emit a choking smell and black smoke, which cannot be used for indoor lighting; The current required is large, and it generally requires a special generator to supply power.

Despite this, arc lamps are still used in lighthouses, theaters and plazas where high-gloss illumination is required. Until modern times, the light source for movie projectors and stage spotlights was arc lamps.

Sun Yi explained: "The high temperature generated by the arc lamp will melt the tip of the graphite electrode, and when the two electrodes are too far apart, the arc will disappear. Similarly, if two electrodes touch each other, the arc will disappear, so adjust the distance between the electrodes frequently. If the electrode burns out, replace it with a new electrode and re-ignite it. ”

In fact, the arc lamp is so bright precisely because the graphite electrode is vaporized at the high temperature of the arc, and the carbon and air ions are excited to produce energy radiation. But the principle here is too complicated, and Sun Yi thought that the Ming Dynasty people would definitely not be able to accept it, so he deliberately skipped it.

Sun handed the sunglasses to a self-motivated craftsman who took care of the arc lamp.

Sun Yi especially told him to be extremely careful, and to be sure to regard the arc as a dangerous lightning. The temperature in the center of the carbon arc is very, very high and can melt steel; If the human body is accidentally hit by an electric arc, it will cause the heart to stop!

Sun Yi looked around, it was enough to have such a lamp in the entire floating island construction site.

With this perverted brightness of the arc lamp, the Aixin National Camp will definitely notice.

It is estimated that Huang Taiji should be so frightened that he can't sleep.