Author of this article: Policeman of the Bus Corps Matuo
On duty I was on duty in the station hall, and a male passenger with a backpack came towards me, holding a small electric fan in his hand. He told me that his phone had run out of power just now and could not flash the gateway that was out of the station, so he wanted to ask me to find a charging port to respond to the emergency.
There is no wiring board in the station hall, so I took him to our police room to charge it. After arriving at the police station, the man charged his phone and we started chatting together.
I noticed that the small fan in his hand was removable. After one end of the fan blade was pulled out of the base, a small wire was connected, and there was no button on the base and the handle.
This made me a little curious, how to start the fan? Then I found that there was a shiny thing on the base like a touch pad, so I poked it with my hand and found that there was no response.
"It's out of power, too?" I asked the man.
"This is a light absorbing plate, not a button."
"Is it light energy?"
"Yes."
"...But I saw the wires."
"Of course, it is photovoltaic power generation, how can I connect the engine without wires?"
"Cough, cough..."
Then he told me that he is in the green capacity industry. This is a sample of the newly developed product of their company. This time he is going to take the high-speed rail to Hebei to show it to customers, because he is afraid that it will be crushed in his backpack, so he has always held it in his hand like a baby.
does not need to charge or plug the battery, it sounds very practical. Maybe after mass production, I will buy a handful of new things first. With the man's consent, I picked up the small fan and walked to a brighter place in the room, but found that the fan still did not turn.
"Why doesn't it turn? Isn't it light energy?"
The man turned around and explained seriously: "Although it is light energy, it is still mainly solar energy, because the wavelength and illumination of ordinary lights do not provide enough power. Now most light energy products on the market also refer to solar energy, because only the sun's spectrum is most suitable for power generation."
I said, "Oh."
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showed his timidity twice, and I didn't dare to talk about this topic anymore. Instead, I reminded him: "When taking the subway, take this thing well and don't thrust other passengers."
The man nodded: "Okay, okay."
Then we didn't know what to talk about. We sat with big eyes and stared for a while, and the scene was a little awkward...
Fortunately, the fast charging was touching, and his phone quickly got some battery power. Then he got up and unplugged his cell phone, thanked me in every possible way, and then carried his backpack and left the house.
I closed the door and suddenly found his little fan on the table, so I quickly picked it up and chased it out.
"Brother, your fan!" The man in the station hall turned around and took the thing from my hand gratefully, and then seemed to have to say something but stopped.
"What's wrong?"
The man hesitated for a moment and said softly: "Oh, police officer, this is not an electric fan, this is a windmill."
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