The electric current is the amount of electric charge that passes through a cross-section of a wire in a given time.
By the way, besides voltage and current, there is also resistance. Let me give you an example.
Let's compare a transformer to a water tank. What happens when the water tank is full of water and there's a hole at the bottom?
Fang Er asked Hu Lian.
Hu Lian subconsciously replied, "This junior knows, water will spurt out of the hole."
At first, it spurts out far, and as the water in the tank gets less and less, the distance it spurts out gets shorter and shorter?
The reason water spurts out is pressure, which comes from the air, from the water tank itself. The pressure forces the water out of the hole until the water level in the tank drops below the hole.
Now, let's compare that transformer to a water tank, this wire to a bamboo tube, and electricity to the water in the water pipe.
Can you imagine the scene now?
Hu Lian nodded, and Fang Er continued.
The pressure exerted by the water coming out of the water tank corresponds to the pressure exerted by the electricity coming out of the transformer, which is voltage.
And the amount of water flowing out of the bamboo tube in a given time corresponds to the amount of electricity passing through the wire, which is the electric current.
Similarly, the resistance encountered by the water flowing through the bamboo tube corresponds to the resistance encountered by the electric current in the wire, which is resistance.
After explaining these, Fang Er stopped talking, waiting for Hu Lian to digest them.
Since he could be a craftsman, his imagination must be good. With Fang Er's example, Hu Lian completely understood the meanings of voltage, current, and resistance.
"My Lord, this junior understands everything."
Seeing that he understood, Fang Er explained the meaning of each symbol on the multimeter and, fearing he would forget, wrote him a note to carry with him.
"My Lord, rest assured, this junior will do a good job and make the voltage 380 volts soon."
Fang Er smiled and shook his head at his assurance.
"No, it's 380 Hu."
The current unit is just what this Lord randomly defined. You are the first director of the electricity management station in the Great Tang, so let's redefine electricity with your name.
Voltage is Hu, and current is Lian.
Voltage plus current is your name, Hu Lian!
Hu Lian was stunned. Redefine electricity with his own name?
He had already experienced the importance of electricity, which was why he liked it so much.
To have his name used to define it meant that his name would be passed down through generations!
To be immortalized in history!
Thinking of this, Hu Lian knelt down with a thud: "My Lord, rest assured, I swear here that as long as I live, the workshop will never be troubled by electricity!"
Fang Er pulled him up and looked into the distance with deep eyes: "Your perspective is still too narrow."
You need to look further, to be ambitious. In the future, all the electricity used in the Great Tang will be generated by you! It will all be under your control!
Use the electricity you generate to make the nights of the Great Tang as bright as day!
Use the electricity you generate to fill the Great Tang with the roar of machines!
Use the electricity you generate... Never mind, let's just do it for the love of it. Work hard!
Fang Er couldn't continue, so he patted Hu Lian's shoulder to end his pep talk.
Even these few words made Hu Lian want to throw his life away on the spot.
It was too damn exciting. Just thinking about the scene described by his Lord made Hu Lian tremble all over. He had never felt so exhilarated, not even with the seductive women in Shenyang city!
"En!"
Hu Lian nodded heavily.
Patting his shoulder again, Fang Er turned and left.
At this moment, his departing back appeared taller to Hu Lian than any mountain he had ever seen!
Electricity is ready, and adjusting the voltage won't take long.
Fluorescent stones are also ready. Fang Er had checked earlier, and the piled-up fluorescent stones were more than double the previous amount. It should be because the Tianyong Division sent some over.
The aluminum ore is in Qingzhou.
Soda ash and sulfuric acid were also sent to Qingzhou by Old Man Yuan.
The remaining task is to use transport ships to bring the materials over to start refining aluminum.
On the way back to Shenyang, Fang Er felt like he had forgotten something, but after thinking for a long time, he couldn't remember what it was.
If he couldn't remember, he decided not to think about it.
As soon as he entered the house, Su Feng greeted him and said, "My Lord, Foreman Zhuang from Shenfei is waiting for you in the front hall."
Fang Er, who was about to head to the backyard, changed direction and walked towards the front hall.
"Zhuang Feng from Shenfei Manor pays his respects to My Lord!"
Seeing Fang Er, Zhuang Feng stood up and saluted.
"Sit down and talk."
Fang Er returned the salute and then walked to the main seat and sat down.
It turned out that Zhuang Feng had come for tires.
During the two months he led his troops for special training, all the previous tires had been used up.
The two hundred bicycles and sixty-six tractors were finished and were parked in the workshop.
As for why only sixty-six tractors were made with eight hundred tires, it was because the subsequent trailers also needed tires, and each needed four!
This way, a tractor with a trailer would use six large tires, and the smaller ones were only for the front wheels, so only two were used.
After finishing, Zhuang Feng helplessly found that there weren't enough tires.
There were still three hundred tires left for the front wheels of the tractors, and only four left for the rear wheels and trailers.
"Leave the tires for now. I'll have someone deliver them to the workshop tomorrow."
"You go back now and bring all the bicycles over."
"Yes, My Lord."
Zhuang Feng saluted and left the manor.
Half an hour later, Fang Er stood at the entrance of the manor, looking at the bicycles being delivered by tractors.
They were neatly stacked in the trailers of the tractors. Su Feng went up and took one down.
The bicycles were all modeled after the one Fang Er had made before, with a women's style, a curved beam, and without the large frame.
Fang Er first checked all the connections and the brakes.
In later generations, brake pads are made of various materials, but for now, they are all difficult to obtain.
The bicycle Fang Er made at Fang Family Village before used layered soles.
That is, soles made by gluing layers of cloth together.
Of course, the cloth used for layered soles was scrap fabric.
Zhuang Feng also used layered cloth this time, with layers of fabric glued together with paste, and then cut into rectangles.
The texture of the cloth provided friction, and the dried paste also had sufficient hardness.
The handlebars were made of wood, and the seats were made of steel plates and leather, with wool filling in the middle for cushioning.
Seeing this, Fang Er nodded with satisfaction.
He stepped onto the bicycle and rode it along the concrete road for a while. The overall feeling was good, just a little heavy.
After testing it, he asked Su Feng to drive the tractor into the manor.
After doing all this, Fang Er pulled Su Feng aside and whispered a few words in his ear.
ps: I wish all graduating students can be admitted to their ideal universities, everyone gets into a 985, and all into a 211.
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