Lin Xi called a number of people and materials who would be the prisoner, and the first thing he wanted to do was a wireless telegraph, there was no means of communication, and if Xuan Yiwei wanted to defeat the pseudo-yuan, it was wishful thinking.

A telegraph needs at least the following parts:

The first is a battery, or a hand-cranked generator, but it is still necessary for the receiver to work stably.

The second part is the transmitter, fortunately, there is no electromagnetic pollution now, as long as the oscillation coil power is a little larger, the launch should be able to survive in the short term.

Both transmitter and receiver need antennas;

The transmitter also needs to use springs and copper to make a button to send an alarm.

The third part is the receiver, the receiver needs to detect the radio carrier, which requires a detection diode, or use ore detection.

Lin Xi thought about it, his head was a little big, but time was running out, he took out the paper and began to write and draw at the same time, while still chattering to himself:

"Battery, optional type?

The first type, voltaic battery, the raw materials required, round copper sheet (metal Cu), zinc sheet (metal Zn), paper sheet, refined salt water (that is, sodium chloride NaCl), this should be the easiest to achieve, it requires a higher voltage, and the low voltage cannot drive a radio oscillator without an amplifier......"

At this time, Mi Sanmei, who was a female general, boldly said: "Venerable Master, we don't understand what you said at all, can you slow down so that we can roughly understand it, so that we can make things for a while, at least more smoothly." ”

Lin Xi suddenly looked back: "Third Sister Mi? ”

Mi Sanmei blushed and said, "Thank you for remembering the people's daughters. ”

Lin Xi not only said:

"There is no need to be polite, on the path of learning from things, everyone can be blessed by heaven,

In our case, Gewuzhizhi came to be known as science, which means teaching and learning separately.

It also has a more important meaning, which is through observation, research, and reproducible and reliable theories, and of course, there is some dross, and as long as there are interest groups, they will do these things. ”

Mi Sanmei, Song Aoxing, and Song Qing were all stunned and didn't know what to do.

Lin Xi smiled and said lightly:

"The children of saints should pursue the truth, overcome lies, and have the ability to maintain the survival of the community and the population, rather than be in a struggle.

Okay, let's talk about this today, what you receive is what you receive, and if you can't receive it, let's slowly experience it in the future.

I'm going to talk about it as I draw it, and I need to ask you how to do it.

Well, it's just the three of you, the carpenter, the copper and iron master, the painter, the goldsmith, the pyrotechnic, the gunpowder, the secretary, the painting, and all the other masters, all come here, we are too short of time, and we must produce things immediately. ”

Song Aoxing said: "This is not enough for the inner cabin. ”

Song Qing said: "If there is only one of them, it should be enough." ”

Mi Sanmei didn't say anything, ran out directly, and after a while, came over with a group of people: "The Master, coppersmith, blacksmith, goldsmith, carpenter, rope maker, painter, pyrotechnic, gunpowdermaker, painter, cook, secretary, and two scholars. ”

Lin Xi nodded and praised: "Mi Sanmei is very good, action, very important, you have to let go of the bad red tape and prudence in the past, our prudence should be used for safety, not intrigue in personnel relations." ”

Lin Xi looked at the kitchen head and remembered: "By the way, the tail feathers of chickens, ducks and geese I used are brought to everyone to give one, if it is not enough, the kitchen head will continue to pull some out." The painter finds some wooden boards, finds some cooked rice grains, glues the top and bottom sides of the hemp paper, and can use a tail feather pen to dip the ink and draw thin lines. ”

[Note: The iron wire seal is one of the small seal calligraphy, which is taken out of the jade script style such as "Mount Tai Carved Stone" and "Langya Tai Carved Stone" in the Qin Dynasty. Its writing method is basically the same as that of the jade seal, and it is named because the strokes are as slender as a line and as strong as iron. This seal book is round with a pen, thin and hard like iron, and a line is drawn at the end of a line. In the Song Dynasty, there were mainly fonts such as Song style and thin gold style, and the strokes were relatively thick and varied, unlike pencils, pens, and ballpoint pens that were consistent, but the iron wire seal was written with a brush, which required good control and would seriously affect the speed of writing and painting. In order to allow everyone to quickly establish a concept, Lin Xi used the characteristics of the iron wire seal to emphasize and distinguish the difference. 】

Lin Xi instructed Mi Sanmei how to cover a piece of paper with a one-foot-and-a-half-square wooden board, and then bend an extra-long part of the paper on the edge of the board, and then pick up the paper, at the fold, press and flatten it horizontally, and then, turn over the paper, press a folded line of the paper with the left hand, grab a corner of the paper with the thumb and index finger of the right hand, and move it to the right back side of the left hand, so that the paper ready to be cut lifts a corner, at the fold, forming a tearing point, and then pressing the tearing point with the thumb of the left hand. The other four fingers hold down the paper being cut, and then the thumb and index finger of the right hand pull the corner of the origami, unfold the other three fingers, loosely press the rolled up cut paper, hold the tearing point, and gradually tear apart, called a tearing and pulling trace, when the tearing is nearing the end, the thumb of Lin Xi's left hand follows the tangent line, slides over, and the paper is torn.

Put the cut paper on the desk, Lin Xi took a few cooked rice particles, and pressed one grain of rice on the left, middle, and right sides of the upper edge of the wooden board, and pressed the remaining three on the left and right sides of the lower edge respectively, and then wiped his fingers with a cloth to align and cover the paper.

After doing this, I held the board and paper up to everyone and showed it in a circle.

This action is very simple, it is rare to understand this meaning, and it is much easier to listen and watch, and learn at the same time.

Mi Sanmei first did it herself, and then helped others do it.

Lin Xi drew a box in the lower right corner of the paper, in which was written "Simple Voltaic Stacked Battery Structure Diagram".

Lin Xi said:

"We first have to make a battery, and this electricity, which we usually call thunderbolt, is the same thing."

[Note: In traditional Chinese characters, the word 電 is prefix for rain at the top, and electricity is at the bottom, which usually refers to lightning. 】

In the small cabin, everyone exclaimed in low voices.

After everyone exclaimed for a while, Lin Xi continued:

"Electricity is a universal phenomenon and force, but we must first be able to grasp it, use it, and then understand it, and understand it more deeply. And the battery is the best and most convenient place to start. ”

On this piece of paper, Lin Xi used the explosion perspective drawing method, drawing the right half of the part, a small wooden board on the left, and a long vertical strip - note: left board;

Then a small wooden board was drawn in the middle, also in a long vertical shape - indicated: rear vertical board;

Then a small plank on the right, with a long vertical strip - note: right board;

Then a small square plank was used at the bottom, and a small square plank was used on top.

Then, very carefully, on the left and right boards, that is, the left and right side boards, on the inside of the upper edges, a shallow groove was drawn, indicating: cover sliding groove;

The small square plank above, marked as the upper cover, leads out an arrow, pointing to the shallow groove, and then in the direction of the shallow groove, an arrow and a leader are drawn to the right.

I looked at it, and seemed to think it was okay, and in the vertical direction of the left in the center, I drew a long wooden board, and marked it with a vertical door panel, and then, the four sides of the long wooden board were depicted with strokes to be thinned, and then the left and right two long side panels were on the left side, and a shallow groove was also drawn, and the vertical chute of the door panel was marked.

After thinking about it, I drew a round hole on the left and right of the upper cover, about the thickness of the little finger, and marked the positive and negative poles leading out of the line hole.

Then, Lin Xi dotted a dotted line in the middle of the paper from top to bottom.

On the left side of the frame, Lin Xi drew a small square piece about two inches square from a fifth near the lower part of the paper, led out a line, and marked it with a square copper sheet, but the strange thing is that on the left side of this square copper sheet, it was folded upwards again, leading out a copper strip about an inch wide, marked - conductive copper strip, led directly upward, the height passed through the height of the cover plate, continued to wear out more than two inches, and more than half an inch near the end, folded to the right, and then drew a hole, marked - fixed hole, and then on the side, He also drew a clamp of copper sheets, and inside the shelf, he drew a circle of things, marked - spring rings.

Lin Xi clapped her hands and was very satisfied.

Then, continuing to draw, on a little open space above the copper sheet, draw a small rag that looks like it, marked - a soft cloth soaked in salt water.

On the soft cloth, I continued to draw a square block, marked with a square square.

【 倭lead, pinyin wō qiān pronounced as zinc】

Then another soft cloth soaked in salt water.

Then a few dots were drawn on it, and at the top, a piece of lead was drawn, and there was a small braid on the right, which also wanted to be folded up, and then a hole was drawn, marked - fixed hole, and then on the side, a copper clip was drawn, and inside the shelf, a circle of things was drawn, marked - spring ring.

After the painting was finished, it seemed that he was still unsatisfied, and in the hollow of the lead, the cover plate was written-positive pole; Then on the cover plate at the hole in the copper sheet, it is marked - negative electrode.

After all the drawings were finished, Lin Xi put down the pen, coughed lightly, and said to everyone:

"Ladies and gentlemen, I would like to introduce to you the first important achievement of Gewu Zhizhi - voltaic battery.

It was invented by the Italian physicist Volt in the 1800 year of Jesus, and was known as the "electric pile" in the early days.

That year, when Volt immersed the metal bars in a strong acid solution, he found that a steady and strong electric current was generated between the two metal bars.

He experimented with different metals, found that copper and zinc were the most suitable metals, and invented the voltaic battery, which is the prototype of today's galvanic battery.

Volta's original stack consisted of stacks of several round plates, each consisting of two different metal plates.

Between all the round plates are several sheets of saltwater-soaked cloth, which is damp and conductive.

However, we now need to hold it and move it, not on the surface of the experimental water, so the packaging has been modified - we use square copper sheets and square lead sheets, and put a damp cloth in the middle that will be soaked in salt water.

The bottom copper sheet guides the outside out through the upper lead, and the lead on the top also guides the line out.

Copper and zinc, combined to form each pair of 1.1 volt batteries, we want to stack 36 pairs.

Colleagues, now let you show your craftsmanship and make this thing immediately. Any questions? ”

The coppersmith said, "Venerable Master, who will do the lead?" ”

Lin Xi looked at Song Aoxing, and Song Aoxing said, "There must still be a little bit of lead in the boat." ”

Lin Xi nodded: "Let's do it first!" ”