Lin Xi said to the jade master in the car:

"Look, you've got the hang of it."

The master jade craftsman said, "The Venerable Master's wonder cannot be guessed at his position, but it is not very difficult to make a telescope now." The Venerable Master's instructions are so detailed that we can complete one in an hour. The department is now retired. ”

Lin Xi said: "Very good, thank you for your hard work, wait until tomorrow morning, if you have the opportunity, you can take the time to rest, remember your personal merits." ”

The jade master said in the car: "Thank you for the human mercy." ”

......

After a while, Song Qing took people and prepared some miscellaneous things.

Song Qing placed it the same way, checked the list while checking it:

"The first piece, the round-mouthed glass cup, which was brought by Hui Niang;

the second, the best lead was ground into a fine powder, a total of two coins; Pure sulfur smashed for about two cents.

The third piece, a piece of silver, can cover the glazed bowl, please see, the Venerable Master, it is more than two inches wider than the glazed bowl;

A small copper seat, put the silver plate on it, well, now it's placed.

Pile up the refined charcoal below, here is 5 catties of refined charcoal;

Fire, this one wait a bit;

Slightly from the bottom of the fine charcoal, use the leather pump to blow the wind, this is the leather pump tube, the wind is resting for a while.

Grind some fine powder of silver, scrape it down, and prepare one or two coins, here are two coins, after the grinding is completed, it is specially used to scoop it with gold medicine.

In the preparation of a piece of copper plate with a thickness of one millimeter and a foot of length and width, it is necessary to polish both sides of the polish, which is the copper plate, which has been polished with brilliance;

Prepare some excellent cooked tung oil, which is a jar.

Alright, it's all in order, please ask the Venerable Master to instruct you. ”

......

Lin Xi put the copper base in place, then put half of the lead powder and sulfur powder in half, put it into the glass cup, and then buckled the silver plate on the glass cup, and then shook the glass cup vigorously until the lead powder and sulfur powder were basically mixed inside.

Then turn the glass bowl and the silver plate upside down, the glass bowl is on top, the glass bowl and the silver plate are on the bottom, and the silver plate is placed on top of the copper base.

Then Lin Xi pressed the glass cup on the silver plate, and rotated it left and right.

Then he felt that the pressure was still not enough, so he said to Song Qing: "Put something, press on it, and press it tighter." ”

Song Qing said, "Let my hand press." ”

Tang Hanlin immediately said, "Song Qing, do what the Venerable Master commands. ”

Song Qing immediately nodded: "Oh, the Venerable Master forgives the sin, Song Qing knows that he is wrong." ”

Song Qing searched for it, but when he couldn't find anything suitable, he said, "Venerable Master, I'll go and get a cutting board from the prison." ”

Lin Xi said: "Very good, take another charcoal basin." ”

Song Qing took a charcoal basin and an iron cutting board, this charcoal basin is a three-legged tripod shape, Lin Xi brought the copper base, silver plate and glass cup into the charcoal basin, and then asked Song Qing to adjust the position of the iron cutting board and press it on the glass pot until the silver plate was slightly warped.

Lin Xi said: "Put the refined charcoal into the charcoal basin, light the fire and blow it inside with a leather picker. ”

Song Qing blew a piece of fine charcoal with a fire fold, and then put the fine charcoal into the charcoal basin, and then Song Aoxing held the long mouth of the leather basket, and Song Qing lifted the two grips of the leather hammer, pulled and clamped, and puffed up the wind.

A word or so (about two or three minutes), the fine charcoal is red, and after two or three words, the copper base faintly red and glowing, and the silver plate in the glass cup quickly blackens (note: silver sulfide), and after two or three words, the sulfur begins to sublimate, and after a while, some white, light yellow spots of powder gradually appear (note: zinc sulfide, may be mixed with silver ions).

After a while, the outer part of the silver plate was almost slightly red, and the sulfur inside the glass cup sublimated and gradually faded.

After almost two or three more words, Lin Xi asked Song Qing to stop, Song Qing was already sweating profusely, and immediately ran out of the cabin, his arm had actually been cramping for a while.

Lin Xi then picked up the one-foot-long copper plate, clamped it with a wooden clip, and put it on the charcoal basin to bake and move.

After baking for a while, Lin Xi touched his fingers to the copper plate, and seemed to feel that it was almost there;

Lin Xi took a brush, dipped it in tung oil, and smeared it on a one-foot-long copper plate, but only a thin layer was applied, and then handed it to Song Aoxing, asking Song Aoxing to take the clip and move it gently on the charcoal fire.

For nearly a moment, Song Aoxing handed the copper plate to Lin Xi, Lin Xi sniffed the smell, and then touched the paint film of tung oil with his fingers, and found that there were no touch marks, nodded to Song Aoxing, and said to Hui Niang: "You come and hold the copper plate." Boiling up, you and Tang Hanlin lifted the cutting board together. ”

Song Aoxing and Tang Hanlin lifted the cutting board, and then put it aside, the cutting board was not very hot, but the glass cup was still quite hot.

Lin Xi touched the glass cup with his fingers, and felt that the high heat had passed, so he took two hand towels, folded them, turned the glass cup over, and immediately took a small shovel, and then used a hand towel to pick up the silver plate, and poured the gray and light yellow powder mixed in it on the tung oil surface of the copper plate, and immediately smoothed it with a small shovel, and then picked up the tung oil, and immediately smeared a layer on it to cover the powder in the glass cup.

[Note: Lin Xi's treatment is not a standard procedure, but because of the limited conditions, it may only be so, at most it is a verification product, the luck component is very large, and the quality is extremely unstable. 】

Then, Lin Xi asked Zhen Niang to take a small porcelain bowl, put some tung oil into it, and then slowly stirred the silver powder with chopsticks, stirred for a while, and then asked Zhen Niang to continue stirring, stir for a while, and see if you continue to add some silver powder. Look at the color seems to be thick, just add some tung oil, until the silver powder is added.

Then he continued to look at the copper plate to see that it had not yet dried, so he asked Song Aoxing to grasp the edge with a hand towel and move it above the embers of the charcoal fire.

After waiting for about a quarter of an hour, Lin Xi touched the paint film of tung oil and felt that it seemed to be about the same. Let Song Aoxing flatten the copper plate.

Then let Zhen Niang take the silver powder tung oil, and then wrap the silver thread around the four sides of the copper plate, and then pull the two under and put a piece of paper on it.

Then the silver powder tung oil is thinly brushed with a brush on the silver wire and the copper plate zinc sulfide oil layer.

Then let Song Aoxing continue to put it on top of the embers of the charcoal fire and continue to bake.

When Lin Xi did this, he felt that he took it for granted, and there were still some mistakes, but he always practiced his true knowledge.

So he took out two copper plates, put the silver threads on the four sides, and then brushed the silver powder tung oil all over them, and made two pieces in succession.

Then, the remaining copper plate was brushed with a tung oil layer.

Because Lin Xi thought just now that he might take it for granted that it was not a good decision to put the silver plate, sulfur, and metal zinc powder in the glass jar.

Now he has only made two pieces of conductive tung paint film, and has painted a copper plate to make an insulating board.

......

Lin Xi went on to say:

"You see, we just put sulfur powder and lead powder in the glass jar, the finer the better, I put the silver plate, so that it may be mixed with some silver elements....."

Mi Sanmei asked, "Dare to ask the Venerable Master, what is the element?" ”

Lin Xi thought for a moment: "You can understand it as a pure single thing. ”

Mi Sanmei sighed.

Lin Xi went on to say:

"When sulfur comes into contact with silver, it becomes silver sulfide, and silver sulfide is black when it sees light. However, I may be mistaken, but I'll talk about it later.

As the temperature rises, the sulfur sublimates, the lead powder and the sulfur will be combined a little, the temperature is getting higher and higher, and the lead sulfur will be turned into zinc sulfide, which has different structures, some are gray-white, and some are light yellow.

This kind of thing can be excited to emit light, including electric field excitation. I'll tell you more about this later.

Zinc sulfide is very unstable, and the air absorbs moisture and oxygen, and it will soon become zinc sulfate, so we will dry it in vain.

There is a certain atmosphere of reduction on the embers of our coals, well, reduction is also a chemical term, you should remember first, and when I tell you in the future.

And it is relatively dry and prevents a change.

So while it is hot, quickly put the zinc sulfide powder in the tung oil and wipe it evenly, of course, the copper sheet should first be covered with a layer of tung oil, thinner tung oil, it is best to dry, but we don't have time, we can only make do with it first.

In this way, the copper base plate is connected to electricity, and the insulation layer of tung oil is on top.

Oh, insulation, you haven't heard of it, that is, electricity can isolate the flow, and many non-metals are insulated, that is, they are not electrified. Most metal materials are not insulated, that is, electrified. ”

Mi Sanmei said: "Then are there any half insulated and half uninsulated?" ”

Lin Xi was happy:

"Yes, there are, and there is one direction that conducts electricity, and the other direction does not conduct electricity.

Well, the current is also directional.

The battery we just had, the side of the lead, is the positive electrode or anode; On the copper side, there is the negative electrode, or cathode. ”

Mi Sanmei said: "What is half insulated and half not insulated?" ”

Lin Xi said:

"It can be electrified, but it is very small, it is called resistance, and the greater the resistance, the more difficult it is to flow.

The conductivity of silver is very good, and the resistance is small;

Mercury and gold are very good, and others are copper, lead, iron, and so on.

Semiconductors are a wonderful material, they are usually not very conductive, but if they are doped with something, under the influence of temperature, light, radiation and even odor and liquid, the resistance will change greatly.

They can also be more complex, using a small voltage or current to control a larger voltage or current.

Oh, voltage and current, voltage is the pressure of electricity, and current is how thick it flows, you can understand it this way.

Unidirectional conduction, we will use it soon, you take some iron wire or iron sheets, we put them next to the fire to roast, slowly heat, they will become a part of the ferric oxide film, this kind of thing, is unidirectional conduction. ”

At this time, Song Qing walked in, and Lin Xi said: "Song Qing, go get some scraps of iron wire and small iron sheets, pour the charcoal ash of the charcoal basin, reload it with refined charcoal, and then put the iron wire and iron sheet into the charcoal fire." ”

After a while, Song Qing took the wire, nails, and small pieces of iron in his hands, threw them on the fine charcoal, and showed them to Lin Xi.

Lin Xi nodded: "The two hands are better?" ”

Song Qing said: "Thank you for asking, it's much better." ”

Lin Xi said:

"Sit down.

We just said ferric oxide, ferric oxide, is an iron compound that can be magnetized.

Ferric oxide has a trans spinel structure, also known as magnetic iron oxide, iron oxide black, magnet, magnet, magnetite, magnetite, and the natural mineral type is magnetite.

Ferro-tetroxide is a conductor, but it is unidirectionally conductive.

Ferro-tetroxide is a good thing, powder can be used as magnetic recording material, and you will see this magic when you have a chance in the future, it can record our speech, and it can be re-released, of course, you need a set of mechanisms.

There are also many ores, all of which may have unidirectional conductivity, but I don't remember very well, sphalerite, lead-zinc ore, chalcopyrite,

Oh, by the way, and the powder we just made is zinc sulfide, but the powder is not very good.

You'll be looking for some lead ore that looks shiny and crystalline. ”

Song Aoxing whispered a few words to Song Qing, and Song Qing ran out again.

.......

At this time, the coppersmith in charge of the battery pack and Song Qing almost collided, Song Qing was knocked back into the cabin, and the coppersmith of the battery, holding a battery pack, almost fell in, but held the battery in his arms.

Mi Sanmei exclaimed: "Sixth Uncle Qi, how are you." ”

Copper master Qi Liu snorted in pain and struggled to stand up: "It's okay, Song Qing, what are you running?" ”

Song Qing hurriedly picked up Qi Liu and smiled: "Uncle Qi Liu, this is not the Venerable Master who told me to find some ore, I'm sorry, you always forgive me." ”

Song Qing carried Lin Xi out, and Qi Liu couldn't have a seizure, so he had to say: "It's okay, the battery is fortunately not broken, you go first, I am also in a hurry to restore the Venerable Master's life." ”

......

This time, it was a battery pack that was divided into several openings, and Lin Xi used it to test different voltages and how they reacted.

Lin Xi waited for them to make arrangements, and asked Zhen Niang to hold a copper wire in her hand, one end connected to the copper end of the battery, and the other end connected to the copper plate of the best electroluminescent plate;

Then he took a copper wire, one end connected to the silver of the photovoltaic panel, and the other end stretched to the lead interface of the battery pack.

Lin Xi first tested the second set of ports, which was about two volts, and there was no response;

Then the fifth set of ports was tested, which was about five volts, and there was no response;

Then the tenth group was tested, which was about 10 volts, and there still seemed to be no response;

Lin Xi was a little discouraged, was it useless to do this?

Lin Xi asked Mi Sanmei to do it.

Mi Sanmei took on the twelfth group......

There seems to be a glimmer of light in some places, but it is not obvious.

Mi Sanmei glanced at Lin Xi inquiringly, and Lin Xi said, "Go ahead." ”

Mi Sanmei connected to the twenty-fourth group, and the entire electric board emitted brilliance, although it did not illuminate the surrounding area a lot, but the electric board was mottled and scattered, and it was clearly luminous.

Lin Xi reached out to the tung oil panel, which had not yet completely condensed.

Lin Xi thought about it, and as a result, the copper wire in Mi Sanmei's hand was connected to the thirty-sixth group by herself, and when she touched it quickly, the electric board emitted a greater light.

Lin Xi thought about it and didn't dare to try again, maybe he burned it.

So, he handed it to Mi Sanmei and said, brush another layer of tung oil, and then dry it slowly.

Tang Hanlin asked, "Venerable Master, is this an electroluminescent plate?" ”

Lin Xi said: "Yes, but it's not bright enough, and it's too hurried to use too high a voltage." Now go ahead and make a different one. ”

This time, Lin Xi did not use the silver plate, but directly mixed sulfur powder, lead powder, and a little silver powder in the glass jar, and then removed the silver plate and repeated the manufacturing process of zinc sulfide powder on the electric plate.

This time, the yellowish powder is slightly more.

Lin Xi basically repeated the manufacturing process of the first electric plate, but because the copper plate had been brushed in advance just now, this time he directly poured zinc sulfide powder on the tung oil of the copper plate, this time it was doped with copper and silver, and then applied tung oil.

The upper layer of zinc sulfide tung oil covered the silver wire conductive tung oil layer, and then Lin Xi asked Mi Sanmei to repeat the voltage luminescence test.

By the time it was the tenth group this time, Guanghua was already clearly visible to the naked eye.

Lin Xi asked Qi Liu to make the electroluminescent copper plate, make a binding post, and then make a wooden frame box, install it, seal the contact lead with tung oil, and install two copper clips on the edge of the wooden box.

After a while, the battery drew out two sets of 24-volt wires, which lit up two light-emitting plates respectively, and the room was bright, because the light-emitting area was relatively large, and you could read a book when you got closer.

Lin Xi let out a sigh: "It's done"

Lin Xi asked people to move the battery to a good position, and then put the wooden frame box of the luminous board, one in the cabin, and one outside the cabin.

Then he commanded, "Blow out the candles." ”

A few people scrambled to blow out the candles.

The brilliance of a foot square glowed, making the cabin glow with a strange luster.

Lin Xi said secretly: "It's a blessing to invite the sky." But since we make two, we're going to continue to have thousands of panels. ”