Mao Xiang took the opportunity to ask Huang Xiao for some things he didn't understand.

Huang Xiao learned from Zhu Youxiao that Zhu Youzhen had joined Mao Xiang's team, and he only then learned that there was Mao Xiang, one of the four great sons of the late Ming Dynasty, in the team.

Huang Xiao relied on his knowledge to answer them one by one.

He quickly solved his previous problems, and he really admired King Xian's knowledge in his heart.

When asked about the light bulb, Huang Xiao hesitated, "This is a bit difficult, the filament in it is easy to solve, it is a metal called tungsten, which is in the chemistry book." ”

Mao Xiang and the others all nodded.

"Sir, but since we can solve the filament, and we can also produce ...... in Rhubarb Village."

All the students nodded their heads, and some people were thoughtful.

Huang Xiao smiled but did not answer.

Mao Xiang suddenly shouted: "Yes, after the filament is lit, it will emit light and heat, if this bulb is filled with air, I'm afraid it's not appropriate, is this the case, sir?" ”

Fang Yizhi also said: "And this glass should also be different, if it is not heat-resistant, I am afraid there is a possibility of explosion!" ”

Zuo Maodi pondered for a while, and said: "When we use oil lamps, black soot will be produced on the lampshade, since this filament will be heated, will it also produce black smoke, but I saw that Mr. brought over and there is no such phenomenon, is it that I guessed wrong?" ”

The rest of the students also said what they thought in their hearts.

Huang Xiao smiled, "The students are all good at asking, let me explain in general, as Mao Xiang said, when this bulb was first invented, people found that the light emitting time is not too long, the filament will be burned, and if the quality of the glass is not enough, there is indeed a danger of exploding, and then people switched to heat-resistant glass." ”

"In view of the situation that it will be burned in a short time, some people have made improvements to pump out the air to make the bulb a vacuum, so that the tungsten filament can shine for a long time, but because of the technology, if it is not exhausted, the glass wall of the bulb will appear black, if there is too much oxygen in it, it is easy to burn the tungsten filament, resulting in damage to the bulb and unusable!"

"Later, it was discovered that filling it with some special gases can effectively avoid this situation, and the service life becomes extremely long, these gases are called inert gases, and you can check the records in the book for yourself."

……

Huang Xiao simply analyzed the problems one by one.

Mao Xiang sighed: "The student thought that this small light bulb should be very simple, how do you know that it will use so much knowledge, and the difficulty is not low, it is the student Meng Lang, so it seems that it is really not a short time to develop successfully, but since we know the principle, as long as we give us time, we will definitely be able to make it!" ”

Huang Xiao said with a smile: "Scientific research is to overcome difficulties one by one, as long as we maintain our passion, there will always be gains!" We still have a lot of time, step by step, and one day, everything we want will come true! ”

The crowd saluted in unison.

"Thank you, sir, for your teachings and encouragement!"

At this moment, Liu Lin led someone into the room.

The leader is naturally Liu Lin's, in addition, Wu Village Chief Chrysanthemum Niang, Zhu Yujian, Zhu Youzhen, plus an old man in his sixties. There were five people in total.

And they came in and saluted.

In Zhuangzi, an anti-theft drill was held inexplicably, which naturally could not be concealed from Zhu Yujian, and he and Zhu Youzhen lived next to each other, and when Liu Lin came over, he also came with Zhu Youzhen.

The students were also curious.

Huang Xiao thought about it, and did not avoid everyone, it can be regarded as an on-site teaching.

Huang Xiao walked to the desk with the brightest light next to the desk lamp.

He put the two desks side by side.

"Ladies and gentlemen, in the evening today, there are villains who sneaked into Nongwuzhuang in an attempt to disadvantage our Ming Dynasty, and after preliminary judgment, it was the work of stubborn officials and gentry, who resisted the new policy and wanted to continue to lie on the people and suck blood, Your Majesty and I were extremely indignant when we learned about it!"

Huang Xiao characterized the matter and said it.

Fang Yizhi, Zuo Maodi and others are all furious!

Zhu Yujian was also furious, he didn't expect that he would encounter this kind of thing not long after he came.

Huang Xiao said to the students: "All the students, they are all people with lofty ideals in my Ming Dynasty, this king said that I know with you, just to let you understand that behind the people living and working in peace and contentment, behind this happy life, there is a cruel struggle, and there are always people who carry the weight forward under the quiet years!" I hope you can use what you have learned in your chest to grow our career! Break all the ghosts! ”

All the students saluted solemnly.

Huang Xiao sat down and said to Fang Yizhi: "Mizhi, take a few pieces of blank paper and a pencil." ”

Fang Yizhi immediately took it.

Huang Xiao spread it on the table and said to the old man, "Old man, come and sit and talk." ”

The old man didn't dare again.

Chrysanthemum Niang shouted: "The young master will let you sit, you will sit, where are there so many vain heads, don't delay the young master's time in the middle of the night!" ”

The old man sat down in fear.

Chrysanthemum Niang introduced: "Young master, this is Liu Laohan from our Nongwuzhuang, a shepherd, we all call him Liu Shepherd, today is the time he met that person." ”

Huang Xiaowan smiled, "That's right, Village Chief Wu is right, it's important to get down to business!" ”

Everyone was infected by Huang Xiao's approachability, and they all smiled slightly.

Huang Xiao asked, "How old is that person?" How tall? Do you see who is about the same size as everyone? ”

Liu Yangqi said: "I am in my twenties. ”

He looked around, pointed at Mao Xiang and said, "It's about the same height as this student." ”

Huang Xiao nodded.

"Do you notice anything different?"

Liu Yangqi thought for a while, and said with some hesitation: "After he walked over, I smelled the smell of green onion and ginger on his body, at that time, I came back from herding sheep, and my stomach was hungry. ”

Huang Xiao snorted.

Chrysanthemum Niang, Zhu Youzhen's eyes lit up, and they had already guessed that this person was most likely mixed with the cook outside.

Chrysanthemum Niang glared at Liu Yangqi in annoyance, why didn't she say such an important situation earlier?

"Okay, you say, I'll try to see if I can draw it."

"What are his eyes?"

……

Everyone was very curious and excited.

King Xian wants to investigate the case on the spot, and he wants to draw a picture to arrest him, but can this be drawn?

Huang Xiao has studied sketching and has a good foundation, when he was in high school, he entered high school, and his overall grades were not very good, so he started the idea of art candidates.

At his request, his father got his wish.

After two years of study, I don't know what's going on, his cultural class has also improved as a whole, and in the end he didn't take the art exam, but passed the college entrance examination and was successfully admitted to the second book.

However, this craft can be regarded as learned.

Later, after graduating, his work was not smooth, and he was fooled into buying a course to study graphic design, and the reason why he was fooled and cut leeks was also related to his art skills.

Later, he taught himself graphic design, picked up sketches, and drew when he was bored, which was also a small hobby.