Chapter 95 Small Firecrackers and Big Firecrackers
Chapter 95 Small Firecrackers and Big Firecrackers
After dinner, Zhang Yang drew the structure of the firework tube. He remembered that after the heat accumulated at the bottom of the firework, severe tension would be generated in the launch tube, thereby pushing the firework forward.
To increase the height of fireworks launch, it is necessary to allow the fireworks to generate a large initial speed when the primer detonates. This initial speed will increase the final launch height of the fireworks.
The initial velocity determines the launch height.
Finished drawing the structural diagram of the fireworks primer.
Take a breath of cold air.
It's really not simple.
Zhang Yang melancholy drew the drawings, and there were many technical problems.
The flame of the oil lamp swayed with the wind blowing in through the crack of the door, and Li Yue's shadow grew longer.
Zhang Yang saw her coming out of the room holding something.
Looking back again, she hugged the quilt and walked into the room.
Why should she take my bedding to her own room?
Zhang Yang looked back and looked again, Huh? It’s true.
Li Yue poked her head out of her room and said, "Come to my room to sleep tonight."
"Oh." Zhang Yang nodded.
Then I saw Li Yue walking into the room with a pile of firewood, as if he was going to light the ondol. "The weather is too cold. Put our two quilts on top of each other, and add the two layers of quilts and the ondol. It will be warmer."
."
Zhang Yang looked out the window and saw a howling northwest wind outside.
It's so cold today.
After washing up, the two of them lay on the bed.
Zhang Yang smelled the smell of her room and continued to ponder the drawings in his hands.
The ondol was burning very warm. Li Yue lay aside and said, "Do you think there is such a thing as fake death in this world? It's the kind of thing where you can't wake up even if you keep falling asleep."
Zhang Yang looked up at the roof, thought for a while and said, "Are you talking about a vegetative state?"
"Vegetative?"
"That's about the same idea." Zhang Yang put the drawing aside and lay down completely.
"Can you wake up?"
Li Yue wrapped herself in quilt and whispered.
"I remembered something. There used to be a vegetative person who couldn't wake up. Before he got sick, he often quarreled with his wife. Now when he can't sleep, his wife scolds him by his bedside every day, recounting old scores and scolding him.
, and then he was so angry that he woke up, and then the couple lived a happy life again."
Li Yue whispered: "Will his wife still scold him after that?"
Zhang Yang thought for a while, "I should still scold..."
Li Yue said: "They must be very happy."
"Um."
Li Yue pursed her lips and smiled, "Sleep."
"Well, sleep."
In December of the fourth year of Zhenguan, cold air swept down from the north and countless livestock froze to death in the Turkic grasslands.
Chang'an City is also so cold that it makes people shiver.
Zhang Yang took a deep breath of cold air, then took a long breath, and turned into a mist in the cold air.
Rubbing your hands together may actually make your hands warmer.
The spinach in the yard was also frozen a lot.
I don’t know how much longer I can eat these spinach.
Break some ice cubes in the water tank, take out some ice and water and put them into the jug.
Then light the stove and boil the water first.
Li Yue got up sleepily and saw Zhang Yang busy in the yard.
After putting on her clothes, Li Yue walked out of the room and faced the cold air, and she shivered unconsciously.
Zhang Yang said: "It will be a sunny day today. You can take out your clothes and bedding to wash them."
Li Yue looked at the sky, "How do you know?"
Zhang Yang pointed to the rising sun in the east and said: "The clouds are light-transmitting fish scales. The cold air is passing through and there is no rain, which means that the altitude is also very dry."
Li Yue nodded while listening.
Zhang Yang swept the yard and continued: "The cold air in the north has passed, and there is no rain. Today will be a sunny day. Some rumors say that fish scale clouds are earthquake clouds. From a meteorological point of view, there is no such theory.
."
"Meteorology?" Li Yue discovered another new word.
She helped sweep the floor and said, "What is meteorology? Is it one of the hundreds of schools of thought?"
Zhang Yang cleared his throat and said, "That's right."
"My husband is so powerful and knows everything. I have to become so powerful too." Li Yue clenched her fists to encourage herself.
Chopping firewood and making a fire, make two pancakes, and fry the mutton, which can be rolled into pancakes and eaten.
After breakfast, Zhang Yang continued loading the firecrackers.
Li Yue held up her little notebook and said: "I understand a little bit. It doesn't feel very cold when it snows. It's the coldest after it stops snowing, because snow does not absorb heat when it condenses. Snow only absorbs heat when it melts.
It seems like the sky is clearing up, but it’s actually colder when the snow melts.”
This understanding ability is really good.
Li Yue recorded it in his little notebook.
Zhang Yang raised his eyes to see what was recorded in her notebook.
Li Yue flashed over and covered the small notebook, "You can't read it."
Zhang Yang said curiously: "What is it written? I can't even read it."
Li Yue held the small notebook and said, "Anyway, you can't read it now. Later... I will show it to you when the time comes."
"All right."
Only then did Zhang Yang look back.
Don't try to get your little daughter-in-law to give up her persistence. You don't know where the persistence in this little girl's heart comes from.
At noon, the sun is much warmer.
Zhang Yang and Li Yue were walking outside Chang'an City. Li Yue sat on the carriage and looked at the scenery along the way. There were still some ice slag by the river.
It seems that the ice in the river has not completely melted.
Zhang Yang sat leaning against the carriage, letting the horse walk slowly.
The breeze blows on his face, and Li Yue sniffs at the sun and feels the warmth of the sun.
There were also firecrackers on the carriage, and Zhang Yang planned to take them out for experiments.
Stopped in an open space with no one else around.
Li Yue watched Zhang Yang place a firecracker on the ground and then lit the fuse.
Then he ran back quickly.
The fuse burned into the firecracker, and the firecracker emitted thick white smoke.
Zhang Yang ran back and covered Li Yue's ears.
Li Yue looked up at Zhang Yang jokingly.
"Bang, bang!"
There were two explosions, but the firecracker didn't fly out of the bamboo tube at all. Why did it become a double-shot cannon?
Li Yue opened her mouth and said excitedly: "It's so awesome, it can ring twice."
The first blast is the detonation of the primer, and the second blast is the firecracker.
Listening to Li Yue's surprised voice, Zhang Yang thought that it was so far away that it didn't fly at all.
The second time, Zhang Yang made some changes and left some more gaps between the primer and the firecrackers.
Light the fuse...
"Bang..."
There was only one explosion.
The firecrackers inside didn't detonate at all.
Li Yue said excitedly: "I want to play too, I want to play too."
Zhang Yang took out a small firecracker and handed it to her, "Hey, you play with this."
Li Yue looked at the small firecracker in his hand, and then at Zhang Yang's big firecracker, "I want to play with the big one!"
"The big one is too dangerous and not suitable for you."
"You can play, and I want to play too." Li Yue protested.
"After my experiment is successful, I will let you play with the big one."