The second brother, Su Linxi, discovered that his sister was missing and hurriedly searched everywhere. When he found her, he saw a pile of parts on the ground.
"We want hydroelectric power."
"Hydropower? I didn't know you knew that too, little sister. Looks like my sister is a jack-of-all-trades."
"It's alright, the principles are all about the same."
"Anyway, I don't know how to do this."
"Second brother, now is not the time for praise. We need to find a way to leave this island."
"Do you need my help?"
"No need, you wouldn't know how to do that either. You're the oldest here, so you can get some food for the boys later. Yan Jingqing and I saw some coconut trees over there, so you can get everyone a lot of coconuts. They've been thirsty for so long. We're okay, but Chu Kexin is still a child, and Junjunzi needs to drink some water too. Try to get some fruit as well, like the ones I brought back, those are edible. As for Junjunzi, although I stopped the bleeding with acupuncture, it's better to go to the hospital as soon as possible. I don't know what's going on in his brain right now, so you guys need to keep an eye on him and watch for symptoms like nausea, vomiting, or dizziness. You can also keep an eye on the others. I'm worried about a concussion, but without the equipment, we can't find out."
Suya spoke these words in a very stern tone.
Su Linxi also realized the seriousness of the matter and began to take it even more seriously.
He had never seen his sister so anxious before. In his memory, his sister had always been calm and collected, and no problem was a problem for her; she would solve it quickly. He had never seen his sister like this before.
Not far away, Chu Kening, who overheard all of this, felt somewhat ashamed.
She saw Yan Jingqing and Su Ya wandering around, worried that they had found a way to leave the island and would abandon them there. Already somewhat concerned, she followed Su Linxi after seeing her searching for her sister. That's when she overheard what Su Ya had just said.
The three people did not see Chu Kening, who had followed them.
Their only thought now is to leave this deserted island as soon as possible.
Chu Kening didn't disturb them and quietly left. From this day forward, she would never contradict Su Ya again.
Su Linxi obediently left, and he led the boys to get food and drinks.
The basic principle of hydroelectric power generation is that the gravitational potential energy of water is converted into kinetic energy to power a water turbine, causing the turbine to start rotating. If we connect a generator to the turbine, the generator will start generating electricity. If we raise the water level to power the turbine, we can see that the turbine's rotational speed increases. Therefore, it can be seen that the greater the water level difference, the greater the kinetic energy gained by the turbine, and the higher the amount of electrical energy that can be converted.
It's easier said than done. The impact of water is the most difficult problem to solve.
Fortunately, they are in modern times, so they can find most of the parts needed for the ship. If they were in ancient times, they wouldn't even be able to find the most basic materials, let alone leave.
To generate hydroelectric power, the first problem to be solved is the rotational speed of the water impact.
Su Ya and Yan Jingqing started digging a pit. They needed to draw in seawater to perform a stamping operation.
Fortunately, it was sand, which is easier to dig than soil. Plus, Suya was strong, and after half an hour, a pit about two meters deep was dug.
Next, Suya went to find a tree.
The middle of that tree can be hollowed out like bamboo. But it's not hollow like bamboo.
It's quite a hassle to scoop it out.
Once the bamboo was hollowed out, the next step was to proceed. Yan Jingqing had already set up the generator. However, as the seawater washed over the bamboo faster and faster, the generator still wouldn't generate electricity.
"What's going on?"
This was Suya's first time working on hydroelectric power. Although she had grasped the principles, she hadn't put many things into practice, so it was all just theoretical.
"Could it be that the speed is not fast enough?"
"This speed is already the fastest; it can't be any faster."
"How about we try the waterwheel?"
"A waterwheel? That's complicated. We can't possibly finish it in ten days or half a month."
Just when they were at their wits' end, Su Linxi arrived after finishing her business.
"Sister, look what we found!"
From afar, we could hear Su Linxi shouting loudly.
Then Su Ya and Yan Jingqing turned their heads and saw that Su Linxi had a dilapidated weighted exercise bike in her hand.
The gravity bike was missing all but two wheels, but this gave Suya and her friends hope.
"I didn't expect to find this here."
"I didn't expect that either. With a little improvement, we can use gravity-powered bicycles to generate electricity."
"But that's a good idea. However, riding a gravity-powered bicycle would require a certain number of revolutions per minute to generate electricity. Can we do that?"
"Don't worry, it'll be fine as long as it's done properly."
Suya said confidently.
Seeing Su Ya's confident gaze, Yan Jingqing secretly vowed to leave this island.
With two physics geniuses around, and having salvaged many more parts from the ship, the two gravity-powered bicycles were soon able to spin.
Su Ya wanted to be the first to try, but unexpectedly, she heard Yan Jingqing speak.
"Second Brother Su, please call everyone over."
Su Linxi didn't know what it meant, but since Yan Jingqing had spoken, Su Linxi went back to call for help.
Soon, everyone except Junjunzi, who was injured and resting, arrived.
They saw the dilapidated gravity bike pieced together in front of them and didn't understand what it meant.
"We want to generate electricity using a gravity-powered bicycle, so we need someone to ride it. We don't know how fast it needs to go to generate electricity, so we're calling everyone over to try it out. Anyone want to be the first one?"
Unexpectedly, Li Xiulu was the first to step forward.
However, even after riding until he was completely exhausted, he still couldn't generate electricity.
Next up was Anjadi, who also rode until he was drenched in sweat, but still couldn't generate electricity.
Yan Jingqing tried, but it didn't work. His second brother, Su Linxi, wanted to try, but Su Ya stopped him. Although the surgery had been over for a long time, the gunshot wound had almost killed him. If it weren't for Su Ya, his second brother would have been gone long ago.
"Second brother, you are injured."
"There's no one else left."
"I'll do it."
After saying that, Su Ya quickly sat on the gravity bike and started pedaling, getting faster and faster until a thin layer of sweat appeared on her forehead. The power generation device lit up, and on the other side of the power generation device, Su Ya had already successfully assembled the signal device.
Suya set the signal to satellite.
The signal was quickly transmitted, but it was cut off after only a few seconds.
"That won't work, the signal is too weak."
"One more time." Suya continued riding, increasing her speed.
After launching three times in succession, the circuit board burned out.
Yan Jingqing looked at Su Ya, somewhat amused and exasperated, holding the circuit board. "This..."
"Forget it, let's eat first, then we'll think of another way."
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