The number of petri dishes in the laboratory has reached fifteen.
However, despite repeated application of mold, it still did not meet the concentration requirements stated in the book.
It may be that the material of the culture medium is not good, or it may be that the fruit that produces Penicillium is not suitable.
Not finding a way yet, Song Yang could only repeat this step over and over again.
Coming out of the laboratory, Tong Qian was preparing to fetch water from the pressure well in the backyard.
This kind of pressurized water well actually came into being very early.
It's just that Jiangzhou is located in the south where water networks are intertwined, and there were not many pressure wells in the past.
After the natural disaster, Song Yang, who had experienced water difficulties, deeply understood the importance of ensuring stable water sources.
So when the new city was being built, dozens of wells were drilled in the city and all were equipped with water pressure devices.
The new city is backed by the Yangtze River and faces the Great Lakes to the east. The groundwater level is extremely abundant, and water can be obtained without drilling deep wells.
"I'll do it." Song Yang walked to the well and took the pressure rod without any explanation.
"Your Majesty, are you done?"
Tong Qian obediently released the pressure lever and squatted there to straighten the bucket.
"Well, today's work is done. It's really troublesome! It will take at least five or six times before we can proceed to the next step." Song Yang said, moving his neck.
"Thank you for your hard work, Your Majesty!" Tong Qian didn't understand experiments, so she could only console her.
"It's not hard, it's just a little troublesome." Song Yang said while pressing the water.
"Hey? This thing is quite difficult to press. Is it stuck somewhere? I'll ask a blacksmith to change it later." Song Yang frowned slightly.
They felt that the pressure rod was slightly heavy, and he could feel the weight, let alone Tong Qian.
"Huh? It was fine yesterday, how could it be broken?" Tong Qian asked strangely.
"It's been more than half a year. It's normal for something to go wrong. I'll go to the workshop in the afternoon and let them fix it personally."
Song Yang pressed a bucket of water, then carried the water and walked into the house.
"Oh! It would be great if there was running water!" Song Yang muttered with a crooked mouth.
"Tap water? What kind of water is that?" Tong Qian walked beside Song Yang and heard him muttering to himself.
"Well... just install a faucet at home, and when you open it, water will flow out."
"Isn't that well filled with water as soon as it is pressed?" Tong Qian was a little confused.
"You don't need to press the tap water. Just turn on a small switch and there will be water." Song Yang said with a smile.
"Oh? So interesting? How about we pretend to be one too?" Tong Qian looked up at Song Yang and said.
"Tap water... OK! I'll go and discuss it with Lao Wang later."
Song Yang thought about it and Tong Qian's suggestion seemed good.
Now that we have a steam engine, pumping water is not a problem.
As long as a few water towers are built, tap water can be provided to the new city.
Thinking of this, Song Yang immediately agreed to Tong Qian.
After putting down the bucket, Song Yang told Tong Qian that he was going to study tap water.
Tong Qian said with a smile: "Your Highness, please go quickly. I'm waiting at home to use the tap water."
…
"Tap water?" Of course Wang Jinshi had never heard of this word before.
Song Yang explained to him again.
"If this thing could be made, would it be possible to install one in every household? Then people wouldn't have to carry water?" Wang Jinshi said in surprise.
"Yes. As long as you turn on the faucet, you can have water anytime and anywhere." Song Yang smiled.
"Are we going to dig an underground river on the ground? It would be very troublesome to do this." Wang Jinshi asked.
"It's not an underground river, it's a water pipe."
Song Yang also told him how tap water is transported to thousands of households.
"Water pump? Water tank? Water pipe? Faucet?" Wang Jinshi was very puzzled.
Song Yang could only draw and explain on the paper with a pen and paper.
"The water pump pumps water into this tank, just like... a pressure well pumps water."
"The water tank is placed on a high shelf so that the water in the tank can flow to lower areas."
"Connect the water in the water tank to people's homes through pipes, so that water can be released as long as people open the faucet at home."
After Song Yang explained step by step, Wang Jinshi finally understood the meaning of tap water.
"Your Majesty, this tap water sounds very good, but...you need to use a water press to pump the water so high...Huh? Your Majesty, you mean to use a steam engine?" Wang Jinshi suddenly reacted.
I originally thought that pumping the water so high would take a lot of effort to press the water, but then I thought about it, they have a steam engine, and using a steam engine to pump it is much easier than using human power.
"Haha. That's right! Connect the steam engine to the water press and you can pump up the groundwater." Song Yang nodded.
"What about the water pipe? I need a long water pipe." Wang Jinshi was a little embarrassed.
Today's craft ironware is very long.
"As for the threaded links, just tighten them up." Song Yang said with a smile.
"Threaded link?" Wang Jinshi looked confused.
Only then did Song Yang realize that there was no such thing as a threaded link at this time.
So Song Yang started writing and drawing on the pictures.
Just as he was explaining, Wang Jinshi nodded and said: "Your Majesty, ordinary people understand. Carpenters sometimes use this connection method, but it is very rare."
After all, Blacksmith Wang is well-informed. He has even seen threaded connections where carpentry vitality is rare...
"Yes. Anyway, just use threads, a larger inner thread, and two outer threads to twist up the water pipe." Song Yang said with gestures.
"Then... won't it leak?" Wang Jinshi scratched his head and asked.
Although he knew about this rare linking method, he didn't really understand it.
"No, if you use straw rope to pad it, it won't leak." Song Yang shook his head and said.
"This thing doesn't seem to be easy to process." Wang Jinshi scratched his head and carefully considered the threaded water pipe.
"Using a lathe to turn, you have to figure out how to do it specifically. I just provide an idea." Song Yang patted Wang Jinshi on the shoulder and said.
The lathes in the workshop are still in their infancy. Although steam engines have been used, there are not many things that can be turned.
Moreover, threads have never been processed before, and Wang Jinshi cannot guarantee that he can make them himself.
"You can discuss this matter with a few carpenters. Isn't it said that carpenters have this kind of thread?" Song Yang suggested.
"Okay then. I'll talk to Liu Bao later." Wang Jinshi nodded.
"Don't worry, the tap water thing can be done casually, and it doesn't require a long time to get it done. It won't matter if it takes a year and a half." Song Yang said easily.
Of course there is no need to rush now, even if the threading is done, just laying the pipes will take a long time.
Besides, we still have to produce pipelines.
The steel production in Daye is not enough to begin with, and the steel that can be freed up to make water pipes is definitely limited.
Song Yang was looking for steel materials and thought of the Crouching Tiger Cannon.
"By the way. How many Tiger Crouching Cannons are there now?"
"Going back to your lord, there are already more than 170 doors." Wang Jinshi said without thinking.