After breakfast, the three of them moved to their desks. Zhao Gongzi explained the design principles to the two disciples in front of the design drawings that were made overnight last night.

In fact, the design structure disciples have already been in mind, and all Zhao Gongzi can do is to remind them of some design points to avoid detours.

For example, it is best to add an appropriate amount of electrolyte to the water to enhance the conductivity of the water and speed up the reaction.

For example, it is better to use an inert electrode, such as a carbon rod, than a metal rod for a reaction rod inserted into water. Because electrolysis is a strong redox reaction, metals are involved in the reaction.

And the carbon rod is best made into a hook, which can facilitate the bamboo tube to collect gas......

After listening to the main points introduced by the master, Zhao Shizhen and Zhang Jian spent an hour breaking down the sketch into parts drawings and giving the specifications of each part.

Looking at the stack of drawings in front of him, Zhao Gongzi couldn't help but sigh secretly, maybe this is the gap between geniuses and mortals.

He is more and more determined to try his best in the future, so that he can keep his foolishness.

The head can be broken, the blood can be shed, and Mr. Zhao's glorious image cannot be lost!

~~

Zhao Gongzi asked people to go to the county last night to collect the corresponding materials.

Fortunately, the materials needed were not scarce, and when they finished the drawings, Xiwa came to report that everything was ready.

They took the drawings and materials to Jiangnan Hospital and occupied a medical laboratory.

First of all, the first step is to make enameled wire, with which the coil can be wound and produce an electromagnetic effect.

Enameled wire consists of a conductor and an insulating layer.

Generally, the wires are copper, but Zhao Gongzi couldn't find such a thin copper wire for a while.

However, fortunately, in the high-end embroidery of the Ming Dynasty, a large number of gold and silver thread fabrics were used. Therefore, even Kunshan has a shop specializing in the production of gold and silver thread, gold, silver, round and flat.

Zhao Gongzi finally chose silver wire, because the conductivity of silver is the best, so he is reluctant to use gold wire.

As for the insulation, it will be more troublesome, Zhao Gongzi has not lit up the technology tree of resin materials, so he can only use the oldest oil-based enameled wire...... It is to brush tung oil repeatedly on the wire.

However, the abrasion resistance is too poor to be directly used in winding, and a good fine cotton yarn wrapping layer must be used.

That's what Faraday used back then.

This is a delicate job, not to mention Zhao Gongzi, even the two inventors with skillful hands can't do it at first.

Fortunately, there is a surgical saint Li Yuanming, and Director Li's hands are really three points more clever than the embroidery girl.

I saw him pull out the slender silver thread from the coil, quench and roast it until soft, and then use a fine brush smaller than a toothbrush to carefully brush the silver thread with tung paint.

The lacquered silver thread is then slowly dried on a copper grill covered with a thick cloth.

After drying, brush the tung oil again and dry again. If it is three times, you can wrap the cotton yarn.

~~

In the meantime, the two inventors were not idle.

Zhang Jian was making a wooden box and a square wooden frame according to the drawings.

Zhao Shizhen dismantled a few lead refills, mashed them with bamboo silk charcoal, sifted them, and then used an appropriate amount of fish maw glue as a binder to make a curved umbrella handle-shaped rod blank.

After drying, it is then put into the boiler, and after a long time of high temperature roasting, it forms a texture similar to ceramics, which is combined.

Fortunately, the hospital has a boiler room with bellows, otherwise it would be really difficult.

~~

In the afternoon, the enameled wire was made.

Under the command of Zhao Gongzi, Li Yuanming evenly wound the wire around the outside of the square wooden frame, and each turn was very tightly wound.

Zhao Hao took the wooden frame from his hand and nodded with satisfaction: "Like a work of art, Director Li is really a good craft." ”

"You can get electricity from this thing?" Li Yuanming looked incredulous. He always felt that it was something that only the thunder mother could do.

That is, Zhao Gongzi, who has already brought a lot of miracles, told him that he could use this pile of simple things to send a call, and he specified that he was going to scold his mother.

"This will open your eyes!" Zhao Hao commanded, and Zhang Jian held a wooden box and placed it on the table.

Li Yuanming saw that in the wooden box, he was wearing an iron shaft with a crank handle, and a paperweight-sized stone was tied to the iron shaft.

This is certainly not the best design, but the easiest verification design to make.

Time is of the essence.

Zhang Jian took the wooden frame and put it in the box.

With a snap, it was stuck in the notch reserved on the inner wall of the wooden box...... The craftsmanship of the inventor of this era is his meow stick.

You can't be an inventor without craftsmanship.

Then he picked up another bowl of lard and used a brush to grease the shaft and the holes in the wood.

At the same time, Zhao Shizhen drew out the two ends of the silver thread from the small holes reserved at both ends of the wooden frame and wrapped them around the two carbon rods thick with chopsticks.

"Close the curtains!" Zhao Gongzi commanded, put on thick eucommia rubber gloves, and his heart thumped excitedly. Secretly Lao Tzu has not yet built a steam engine, but he has made a generator first.

"Shake it up!" Zhao Hao ordered loudly.

Zhao Shizhen was also wearing gloves, and slowly turned the crank of the iron shaft, and the stone tied to the iron shaft slowly rotated.

"It's time to witness the miracle!" In the dimly lit room, Zhao Hao picked up a carbon rod in one hand and slowly approached it.

Everyone's eyes widened and they held their breath, not knowing what would happen in the next moment.

Just when the two carbon rods were still an inch apart, suddenly a blue electric spark was pulled out between the tips of the two rods, and several people present were startled!

"It worked!" Zhao Shizhen and Zhang Jian cheered.

But the two weren't too excited. Because at this time, they don't know what this arc means to humans.

"Lightning!" Li Yuanming knelt on the ground at once, shocked beyond measure: "Childe actually made lightning!" ”

Saying that, he actually bowed to Zhao Hao and worshipped: "No wonder the son is so strange, it turns out that Lei Gong has descended to earth!" ”

"I'm still electrifying, hurry up, don't be ashamed." Zhao Hao rolled his eyes and didn't bother with him.

Because Zhao Gongzi was in a good mood at this moment, the world's first DC generator was born in his hands.

I'm sorry, Comrade Xiaofa. In the future, the capacitance unit will be 'Zhao'......

Uh, that's ugly, let's talk about it later.

~~

After testing that the hand-cranked generator was working normally, Zhao Gongzi struck while the iron was hot, asked the guards to open the curtains, and brought a water tank.

There was warm boiling water in the tank, and Zhao Gongzi put on a mask and commanded on the side.

Zhang Jian cautiously added miscanthus to it, and Zhao Shizhen stirred it slowly with a wooden stick.

Wait until the water gradually settles and the water temperature is completely cooled, and then scoop the water into the porcelain basin.

Two more carbon rods are attached to a thin wooden board and sent into the basin with their heads downward, just like fishing.

Then put two bamboo tubes on two carbon hooks, and at the other end of the bamboo tube, a pig urine bubble is set on each end and tied tightly with a rope.

When the crank of the generator is shaken, there is a slight gurgling sound in the bamboo tube, as if water is boiling.

The two shriveled pig urine bubbles gradually filled.

The one on the left is noticeably much faster and has a strong lift. If Zhao Hao hadn't held it down in time, he would have been able to fly the thin wooden plank on the edge of the basin.

The three masters and apprentices smiled happily, they knew that the electrolysis had also succeeded.

ps. Collect the naming of the Ming version of the seven major units of measurement. Let's start with the length today.

If you agree to use the current zhang, ruler, and inch, please choose 1, and if you agree to change to the metric system, please choose 2, (of course, it is not necessarily called meters and centimeters).

The voting period is three days.

Slept.