Joseph's words are actually very untrue, but he can't say to Napoleon, "Your eldest brother and I have crossed over, so I aimed at the light bulb and the electron tube from the beginning, right?"

Whether it's a light bulb or an electron tube, in fact, their technology trees are almost the same, and the technical difficulties are almost the same.

The first is the technology of vacuuming. The filament of an incandescent lamp is heated to two or three thousand degrees and emits a brilliant glow. But any conductive material, at such a temperature, will undergo a violent oxidation reaction with the oxygen in the air, and then be burned off. So in order to get a usable incandescent lamp, the first technical hurdle is vacuuming.

Another technical hurdle is the production of filaments. In the original history, Edison is said to have experimented with thousands of materials before selecting a barely usable carbonized bamboo filament.

Joseph, of course, knew that the filaments of later generations were made of tungsten filament. However, in this era, tungsten has just been discovered, the yield is very low, and the melting point of tungsten is very high, it is almost impossible to refine by smelting, and can only be obtained by chemical purification, powder sintering, and then forging and drawing. However, because tungsten itself is very hard and relatively brittle, it is not easy to draw wire, and ordinary high-carbon steel wire drawing dies cannot pull this thing at all, and diamond wire drawing dies must be used to produce this thing. At that time, there was no synthetic diamond.

In this way, although it is not impossible to produce tungsten wire, the output and cost are unacceptable. Considering that there is still a gap between the vacuum technology and later generations, even if tungsten filament is used, the time that an incandescent lamp can be used is still limited. In contrast, firing carbonized bamboo filament is much cheaper and simpler. So, after a little trying, Joseph decided to follow Edison's path and use carbonized bamboo filament as a filament.

Of course, the attempt to pull tungsten wire was not fruitless, at least, in the process, Joseph's laboratory succeeded in firing tungsten carbide. Although the process of making this thing is not particularly perfect, in the future, in terms of metal processing and other aspects, this thing will be a big killer.

Today, Joseph's light bulb can be lit for hundreds of hours on end, which is barely functional. And now there is no second competitor in the world, so there is no need for him to improve the performance of his products as soon as possible. Even, in a sense, a little good is not necessarily a bad thing.

As for the tube, it is relatively more complicated, so now when it is made, the yield is still not too high, but also considering that there are no competitors, so, although the performance is a little worse and the cost is a little higher, it is still good. So, it's great to have no competitors.

"What spectacle are you talking about?" As soon as Napoleon heard Joseph say the word "wonder", he immediately became energetic.

"Of course it's the 'city that never sleeps.'" Joseph said, "Isn't it a wonder that we take the whole of Paris, all the street lights, and then put them on the main landmarks of Paris, and at night, the whole of Paris is as bright as day?" ”

Napoleon listened, shook his head and said: "I thought it was something, there were already street lamps in Paris, what is this?" ”

"Street lights? Those gaslights? Compared to the electric light, the brightness of that thing was like a ghost fire in a graveyard. It just seems to be a firefly to Haoyue, which is completely incomparable. Would you like to come with me to the lab to see the results? ”

When Napoleon heard this, he immediately opened his vigilant eyes, stared at Joseph and said, "Joseph, are you sure that what can be realized in your laboratory can also be realized in the factory?" I won't be fooled a second time! ”

"What do you mean by being fooled a second time? What can be achieved in my lab, it will definitely be implemented in the factory, but some of it will require a final process. Joseph said, but he looked at Napoleon's eyes and immediately added, "But don't worry this time, this thing will definitely be ready for mass production in the factory at once." ”

"That's good." Napoleon said, "Why don't we go and see it at once?" Well, by the way, bring Lucien with you. ”

Joseph thought about it, if he wanted to promote the product, which of the trades in Lucien's hands would definitely be very capable of bringing goods, so he nodded and said, "It's okay, bring him with you." However, at this point, this guy is probably already ......"

"Whatever? No matter how busy he is, let's call him, can he still come? Does he want to rebel? Napoleon said. In fact, Napoleon was quite happy to be able to disturb Lucian while he was working on the Zuole because he had a valid reason.

"Napoleon, you are probably jealous, that's a certainty." Joseph said, and at the same time he added a sentence in his heart, "This sentence is really said by Lu Xun." ”

But Napoleon didn't know this, and he smiled contemptuously: "Just him? Hehe, well, the Kingdom of Prussia just got a cute little princess......"

Nowadays, there are corded telephones between the most important departments in France, and the technology of this thing is actually quite simple, and it takes almost no effort to make it. Joseph also took it and set up a "Paris telephone company", which was handed over to Louis, who had just graduated from the University of Paris.

However, because of the high cost of installation and operation, (in this era, it is impossible to have an automatic switchboard, and all telephone connections need to be done manually, which naturally increases the cost.) So now only the most important departments, and the richest people, can afford it. Of course, Lucien met both conditions, so it was now very easy for Joseph and Napoleon to find him, and even in the house where he was in the Moulin Rouge, he had a telephone.

When the call came, Lucien had just arrived at the Moulin Rouge and was about to get to work. However, in the face of the call of the eldest brother and the second brother, he still put down the work in his hand without hesitation and rushed over immediately.

By the time he arrived at Joseph's laboratory, it was completely dark. Lucien got down from the carriage and saw his two brothers standing at the door waiting for him, and hurriedly trotted over: "Joseph, Napoleon, my place is far away, and I am already rushing over as soon as possible." ”

"We know that." Joseph said.

Then Lucien let out a sigh of relief, and then asked, "Is there anything important that you are looking for me at this time?" ”

"I'll show you something important," said Joseph, "and now come in with me." ”

As he spoke, Joseph pushed open the door of the laboratory and entered, followed by Napoleon and Lucien.

"Joseph, you are really, so dark, and there is not a candle in it...... I can't see anything...... Ah! Lucien was complaining, when suddenly his eyes lit up, and the light was so strong that he couldn't even open his eyes.

"It's ...... This is ......" Lucien asked, squinting his palms in front of his eyes.

"It's electric light, it's a whole new era of running factories 24 hours a day." Joseph replied.

"Oh my God. I almost went blind! Lucien gradually got used to it, "This thing is so bright!" Compared to it, candles and other things are like fireflies. Well...... Is this thing producing energy? How long does it last? How much? I think the whole 'Moulin Rouge', from the inside out, including the fan blades of the red windmill, should go around with this! If so, it's definitely ......"

"You don't care about the science of this thing?" Napoleon asked.

"Where do I need to care about this?" Lucien said, "Anyway, there is Joseph, and there is you." What else do I need to care about? Besides, it's like I like to eat tuna, but I still have to figure out how the chef makes the tuna? Well, you haven't answered my question yet, Joseph. ”

"The energy production can be used for about 800 hours, and the price, according to the brightness of each bulb, and the reserved fifty percent of the profit, 1 to 5 francs, this is 1 franc. In the future, when the production is larger, the price can be reduced to one-third of the current level. Joseph replied

"This 1 franc should be universally used, or is it a little more expensive, 5 francs? Joseph: Would you do business? How can you sell it for only 5 francs? The high-end ones are sold for at least 50 francs! A lifetime of money, a lifetime of goods; One franc for money, 5 for raw goods. Do you understand? I deal with those rich people every day, and I understand them best, they buy these, in addition to using them, and more importantly, showing off, 5 francs of things, how to show off? Well, how do you use this thing? ”

Joseph looked at Lucien and shook his head, then pointed to a rope hanging down from the wall:

"Pull it and the light will come on; Pull it again, and it's gone. Do you try? ”

Lucien walked over and was about to reach out to pull the rope, but he suddenly stopped again and asked, "This won't be electrocuted, right?" ”

With the widespread use of electricity, it is not once or twice that the accident of electrocution resulting in death is no longer one.

"Stupid!" Napoleon said, "That rope is an insulator!" ”

"I know, I'm worried if it's wet......"

"I just pulled." Joseph said.

"Okay." Lucien calmed down, stretched out his hand to pull the rope, and when he pulled it, there was a click, and it was suddenly dark in front of him; Pull again, "click", and there is a bright light in front of me; Pull it again, and there is a "click" sound......

"It's fun!" Lucien tugged and ...... "Click......

"Why doesn't it light up?" In the dark, Lucien asked.

"You've been ruined by you like this!" Joseph said.

"Joseph, you said this thing could last eight hundred hours!"

"It had been hundreds of hours before you messed around." Joseph replied.