To make a vacuum tube, you must find tungsten ore and purify the tungsten to at least a thousand degrees, as you know about light bulbs. "
"Nonsense, how could I not know about light bulbs? It's easy to reach temperatures above a thousand degrees."
Zhang Yumeng looked at Yang Qian like an idiot and sneered, "Since you know about light bulbs, then you know that the round light bulb has glass on the outside and tungsten filament on the inside."
"How can I put tungsten filament into a light bulb in an environment above a thousand degrees? The melting point of glass is only 700 degrees."
Yang Qian was suddenly stunned. He was no stranger to light bulbs, but who knew how the tungsten filament inside was put in.
"Then, what should we do?"
Zhang Yumeng flipped her hair and said with a smile, "It's actually not difficult. Just heat the tungsten powder alone and put it in a glass container. It's best to make it as small as possible."
"The most disgusting thing is, why are vacuum tubes called vacuum tubes? It's because there is a vacuum inside. Then you need to use another kind of glass equipment, the Hickman vacuum pump. This equipment has super strong suction and can keep the vacuum tube in the highest vacuum environment."
"The next step is plastic, which is much simpler. I have produced a lot of formalin. After continuous improvement, the formalin now is comparable to the ordinary products in my previous life."
"As long as a large amount of coal burning ash is collected, the coal ash + sodium hydroxide + formalin can become the first artificial plastic in human history - phenolic plastic."
Yang Qian's mouth widened, and cold sweat continued to flow from his temples. "Nima, it's so complicated."
"These are all fine," Yang Qian said calmly.
"No, but the next step is simple. Make a manganese battery, make the zinc into a palm-sized piece of paper, wrap the manganese, and put a piece of carbon into it to make a manganese battery."
"Find or make some Roche salt, which can turn sound into electricity, stick this to something lightweight like a plastic amplifier, and the microphone is complete."
"Put all the things I just mentioned together and it will be a mobile phone. Of course it will be much larger."
Zhang Yumeng became more and more enthusiastic as she spoke, her eyes bursting with enthusiasm, "This thing that wirelessly transmits sounds to distant places is the most powerful weapon in modern warfare - mobile phones."
The two people exchanged fiercely.
Cao Wushuang, who was beside her, hesitated to leave or stay. After a long time, she sighed and looked at Krisna. Unexpectedly, Krisna also looked at her.
"Christina, do they two do this often?"
Krisna waved her hands and said with a smile, "Don't pay attention to them. After the two of them entered the state, we basically couldn't understand what they said. But every time after such a heated discussion, Yang Qian or Zhang Xiaoniang would invent something very powerful." s things."
"invention?"
"Hey~!"
Cao Wushuang pulled out his sword and said, "This material is far superior to iron. Was this also invented by Zhang Xiaoniang?"
"No, this is what Yang Gan did. You are his master and one of his own. Let me tell you directly. The 150,000 frontier troops are equipped with long swords, halberds, hoons, iron knives, and even armors and horses. The armors are all made of this material, of course the armors of the auxiliary soldiers will be inferior."
"The most powerful among them are the arrowheads we use, and the last ones are made of iron. Good arrowheads are made of this kind of steel. When shot with a powerful crossbow, ordinary shields and armors can't stop them."
Cao Wushuang couldn't help but be horrified. He thought it was a sword that would dominate the world. His own precious sword was no good, but it turned out to be mass-produced equipment. It was unforgivable.
After the two argued, Yang Gan said in vain, "You don't need to tell me the principles of this kind of thing from now on. It's so troublesome. I just want a phone call. Why is it so troublesome?"
"Tch, you think in modern times, why don't you go to Xixi to buy it? Don't worry, every time I make something in the future, I will tell you the principle."
Yang Gan asked curiously, "Why, why is this?"
"Otherwise you think it's easy for me. Sulfuric acid and formalin are all poisonous and may make my skin worse. So you must know the principle so that you can understand how difficult it is for me."
Yang Gan gritted his teeth and said, "Last time I heard that a woman made her boyfriend experience the hardship of giving birth. He was shocked for three hours and his small intestine was cut off. I feel like you are this kind of person."
Zhang Yumeng immediately perked up, "Why didn't I know? What happened to her boyfriend?"
Yang Gan rolled his eyes at her, "What kind of boyfriend? That's the accuser, okay? I think if I fell in love with you in my previous life, you would be a dangerous person who wants others to feel the same way."
Before Zhang Yumeng could say anything else, Yang Gan shook the back of his head at her.
"Here, help me take off the bandage and look at the wound. How about you?"
Zhang Yumeng choked and had no choice but to remove Yang Qian's bandage. It didn't happen so quickly. No matter how good the wound's healing power was, it would still take more than ten days.
When it comes to complete healing, it’s hard to say since everyone’s constitution is different.
When the bandage was removed, Zhang Yumeng opened his mouth and kept touching his wound with his hands.
"How, how is that possible?"
"It took more than ten days for the blood scab to fall off. How is this possible? There is no reason."
Yang Gan turned his head and seemed to say something, but when he saw Zhang Yumeng's curious eyes, he swallowed unconsciously.
"You, what do you want to do?"
Zhang Yumeng said with a dry mouth, "It would be great if I could dissect."
Yang Gan's hair stood on end instantly, and he smiled bitterly and said, "Yu Meng, let's just be normal people, it's not easy to be like a beast."
Zhang Yumeng pulled at the ferocious arrow wound on Yang Qian's back and said with a smile, "Why are you so anxious? This is all you can achieve."
Zhang Yumeng not only checked his arrow wounds, but also the wounds on his shoulders and behind his thighs. They had all healed completely.
"What kind of animal physique do you have? You're actually getting better?"
After Yang Qian tore off all the bandages, Zhao Wenmo put on the clothes for him very considerately.
He gestured with his hands to stretch his muscles, and suddenly a long-lost feeling came to his heart.
"Hahahaha, I'm healed."
"Ge Xiuming, take my pulse and see if there's anything wrong with me."
An expression of joy appeared on Yang Gan's face, and he felt excited inside. He likes to be a homebody, but there is a difference between being an active homebody and being a passive homebody.
If I don't exercise every day, I feel like I'm getting rusty.
Ge Xiuming pressed three fingers on Yang Qian's pulse, and his eyes gradually narrowed.
After a long time, his face was full of shock and disbelief: "Your Majesty, you, your body has fully recovered, and, and..."
"And what, you said, hesitating."
"And my body, muscles and bones are stronger than before."
Yang Gan asked curiously, "What's going on? In Fuyan and Yanggu Pass, I don't have time to stretch my muscles and exercise my martial arts."
After frowning, he looked at Cao Wushuang.
Cao Wushuang smiled and said, "Although you haven't exercised, the medicinal materials that I give you every day are quite expensive. The medicine that I give you every day at the medicine shop is at least one piece of wild ginseng that is hundreds of years old."
One hand reached out and touched Yang Gan's chin. Zhang Yumeng smiled and said, "Your face is round."
Yang Qian covered his chest and said disdainfully, "It seems you like my treatment very much, right?"
"No no."
"You're kidding, I would have died if I were injured like you."
...
Yang Qian kept twisting his body. After he was satisfied, he ordered, "Everyone, hurry up and pack your things. We are going back to Yuntong."
Zhang Yumeng said happily, "Really? I can finally go back."
Zhao Wenmo also breathed a long sigh of relief.
Krisna tilted her head and smelled everywhere on her body. "If you hadn't seen that you were injured, you would have gone back. There is nothing here, even the toilet has to be made on site."
Cao Wushuang looked at everyone in confusion. Although Yanggu Pass was a border pass, his father Bo Chao was very kind to everyone.
Everything delicious and delicious was provided first, and a group of auxiliary soldiers were even assigned to drive them around.
After seeing everyone starting to clean up, Yang Gan pushed away Zhao Wenmo who wanted to help him and walked outside.
Arriving at the office area upstairs, Yang Qian showed a smile even from afar.
"Brother Zai, I'm going to trouble you this time."
Zaifu Bochao was startled and immediately came out to greet him.
"Wu An-jun, are you okay?"
"Everything is fine. I'm completely recovered. I plan to go back today."
Zaifu Bochao hesitated and said, "Wu Anjun..."
Yang Qian interrupted displeasedly and said, "Brother Zaifu, you call me Wu Anjun, but that makes a lot of difference."
Zaifu Bochao slapped his head and laughed, "It was my negligence, Brother Yang, why did you go back so soon? I have seen your injuries, they are not serious."
Yang Gan smiled, took off his clothes and exposed his back, "Look, everything is fine."
Zai Fu Bo Chao took a closer look and saw the hideous wound, which made him take a breath of air. "Brother Yang, what on earth did you do? You were so seriously injured. If it had been left to an ordinary person, he would have died many times over."
After Yang Gan put on his clothes, he said with a smile, "I have recovered. Of course I have to go back. There are a lot of things waiting for me in the county."
"But Brother Zaifu, are you sure you want to know? It's okay to tell you about our relationship, but the matter at this time is very important, and I'm afraid it will bring death to Brother Zaifu."
Zaifu Bochao said silently, "Some time ago, my little sister wrote to me and told me that her husband took in two more concubines, and now life is getting more and more difficult. From the outside, my little sister seems to be living a good life, but in fact , but he was always beaten and scolded at home."
"If you know Brother Yang's secret, can you be one of your own?"
After Yang Gan thought about it, he smiled, "Forget it, in this world, the less you know, the longer you live. Sometimes it's better to be confused."
"If it were me, I would kidnap the little girl and bring her to me."
Zaifu Bochao smiled bitterly, "I came from a wealthy family. Without the support of a wealthy family, I won't be able to hold this position. By then, I may not be able to even let my sister live a good life."
"Brother Zai, if you don't mind it, you might as well let me take action and your sister can live a good life in Yuntong County in the future. What do you think?"
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Chapter 406: Science, It’s Too Difficult to read for free.
