Chapter 17: Baghdad battery

The 　　voltaic stack, as the name implies, is actually a "stack", which is composed of individual "voltaic layers" stacked together.
　　Richard put a zinc ring on a copper ring and pressed it with a piece of linen cloth soaked in salt water to make a "voltaic layer". Next, Richard put zinc rings and copper rings on the linen and pressed the linen. Repeat the operation for more than ten times, and a columnar body is standing in front of the eyes. This is the so-called "voltaic stack"-an initial battery-the top is the negative electrode, and the bottom is the positive electrode.
　　 Without hesitation, Richard quickly connected the metal wire and felt the current strength of the voltaic stack. His eyebrows rose slightly, and then he calmed down again.
　　 It is true that compared to fruit batteries, the current of the voltaic stack is indeed stronger, but the strength is limited, and there is no change in magnitude (ten times).
　　 Of course, if you want to use this voltaic stack forcibly, it is not impossible. If the current is too small, it can be boosted by the voltaic stack in parallel, and if the voltage is too small, it can be boosted by the voltaic stack in series. This is nothing more than a modern earth, the use of physics in junior high school.
But the problem that Richard faces is that the current and voltage of the voltaic stack are insufficient. If you want both to meet the standard, you must connect them in parallel at the same time to form a huge voltaic stack." phalanx". This current is used during meditation. Richard is very doubtful whether enough voltaic stacks can be placed in his bedroom.
　　 So... still not good.
　　 Richard exhaled, frowning deeply.
　　 The two maids looked at Li Cha in fear, Li Cha kept frowning and thinking, and then tried again on time after a while.
　　Since the fruit battery does not work and the voltaic stack does not work, then make a Baghdad battery.
　　 Yes, Baghdad battery.
　　If the voltaic stack is the first power generator recorded on modern earth, then the Baghdad battery is the first power generator not recorded on modern earth.
　　 Unlike other batteries, the Baghdad battery does not have a clear inventor. In fact, it was excavated from the ground by accident:
　　 In the history of modern earth, on a certain summer day in June 1936, the construction of the railway was being carried out intensively outside the village of Gegatrabua in the suburbs of Iraq’s capital Baghdad. When the workers were using shovel to prepare the roadbed, they excavated an ancient mausoleum made of huge stone slabs, continued to dig, and excavated an ancient sarcophagus.
　　 Two months later, with the help of Iraqi archaeologists, the sarcophagus was carefully opened, and a large number of artifacts from the ancient Persian period more than 2,000 years ago were discovered. There are twisted beads made of pearls and a lot of gold and silverware, and there is also a strangely shaped pottery.
　　 This pottery is a Baghdad battery. After being successfully repaired, the current generated lasted for 18 days before disappearing.
　　No one knows why chemical batteries existed more than two thousand years ago and are more advanced than voltaic stacks. No one knows to what extent the electrical experiments at that time developed.
　　 Richard also did not know the puzzle, and now he has made a Baghdad battery, just want to test whether he can meet his needs.
hope so……
　　 Richard thought, turning to the two maids and instructing again. This time it took a little longer because the materials used were significantly more troublesome than the previous two batteries.
　　Half a day later, the materials are ready, and Richard once again made it himself. The two maids looked at them with wide eyes, because they did not know whether Richard would let them read it and imitate to make a new one. After all, this is a precedent.
　　 Richard moves quickly, first picking up a ten-centimeter-tall clay pot, and then pouring viscous asphalt into it.
　　Asphalt also maintains a certain fluidity with temperature, and slowly deforms according to the shape of the clay pot. After the asphalt filled half of the pottery pot, Richard picked up a thick copper tube with a diameter of about 3 inside. Align the asphalt in the jar and insert the entire copper tube into the asphalt.
　　 Then Richard picked up a thin solid iron rod and inserted it into the copper tube, carefully controlling the angle to ensure that the iron rod did not touch the wall of the copper tube and was a few centimeters higher than the copper tube.
　　After doing this, immediately began to pour the acid into the jar, bubbles appeared, and the Baghdad battery has been completed. Connect the copper tube and the iron rod with the wire, and Richard touched it, and immediately felt a lot of strong current appear.
　　 But after feeling a while, Li Cha frowned again.
　　The current is strong, but it is still not enough to change the biological current in the body. In addition...The current of the Baghdad battery is extremely unstable, strong and weak. Although it is not clear what effect this will have on "opening up the source of the law", Richard thinks it should be the bad kind.
　　 "Sure enough, it still doesn't work." Li Cha murmured and exhaled. Shaking his head, he pushed open the door of the independent laboratory and walked out. The maid Angel and the maid Luna quickly followed.
　　 The rest of the maids in the hall saw Angel and Luna together with Richard, and couldn't help but cast jealous eyes on them. But soon, they found that the face of His Royal Highness Prince Richard had an uncomfortable expression on their faces. Both An Qi and Luna were slightly flustered, and their eyes immediately changed into gloating.
　　 There is also competition between the servants, and it is very fierce. At this moment, in the eyes of the other servants, An Qi and Luna apparently failed to complete the task of Richard's account, making Richard angry, which is good news for them.
　　 "Da Da Da", Richard walked through the hall and walked to the entrance of the palace, and found that the time was close to the afternoon-unconsciously half a day had passed.
　　After three experiments, the problem of current is still not solved, how to solve it?
　　 Richard was in deep thought. UU reading www. uukanshu.com
　　The guard captain Edward appeared. After seeing Richard, he wanted to remind Richard not to forget to eat lunch. But seeing Li Cha's brows locked in contemplation, she stopped sensibly and didn't bother to disturb.
　　 The whole world suddenly became quiet. The guards and maids in the palace were doing things with hands and feet, trying not to make any sounds, lest they might affect Richard's thinking and anger the Prince.
　　Richard is in this strange quiet, thinking for a long time, looking for a solution to the problem.
After half a ring, Richard suddenly raised his head and looked at the square in front of him.
　　 "Fluttering..."
　　 Two gray finches flew past the ground almost against the square.
　　 turned his head to look above the palace gate. In a corner, a spider was rapidly weaving a cobweb, which was a vertical net.
　　 narrowed his eyes, Li Cha reached out his hand, felt it, and found that the air humidity was increasing. Turned his head and glanced at the sky, the sun was still there, but the clouds were thickening, and the southern sky was getting darker.
　　 "It's going to rain?" Li Cha's eyes narrowed.
　　Theoretically, this is normal. After all, it has been hot for several days, and a lot of water vapor has evaporated into the air. It seems that the download should not be small.
　　 And when it rains, it will be accompanied by thunder and lightning.
　　 Lightning, as a kind of electric current in nature, is theoretically strong enough to be able to change the biological current in a person without thinking. But how to draw down and control the use is a problem. After all, I don't want to be struck by thunder, so it is not scientific research at all, but suicide.
In this case……
　　 For a moment, Richard turned around and, with a plan, looked at Edward, the captain of the guard, and said, "Get the craftsman in the palace. I have something to tell him."
　　 "Ah, yes..."