The old lady's leak made the old man's face red, and he was very faceless.

Tang Ning laughed and said, "How can people understand everything?" Professor Faraday's expertise is electricity and magnetism, this radio communication, in fact, is another field, there are traps in my patent, it is specifically to make people confused, but if someone really understands, it will be a real patented technology in it! This is the difference between the way businessmen and scientists think, I don't think anyone will fully understand it for many years, of course, the patent will not pass, it doesn't matter, it will be passed one day! ”

Faraday complained, "Aren't you hindering the progress of science by doing this?" ”

Downing has his own theory: "Yes, on the surface, this is a restriction on the development of science, but it depends on who uses this trick." If you use it for good people, it is a good thing, and if you use it for bad people, it is a bad thing. Why is it a good thing? For example, only if I do this way can I get the £3 million out of Parliament, and I can put £1.5 million into what I think is the most important thing to improve people's lives – treating sewage. Without my push, Congress doesn't know how long it would have been going to be willing to go to great lengths to build sewers!

Another point, after the Prime Minister's reminder, I also found that wireless telegraphy has greatly improved military intelligence and command systems, and in this era of global hegemony full of dangers, if this thing is not controlled and falls into the hands of evil countries, then it will be even more difficult for mankind. Professor, do you think I have any truth in this idea? ”

Faraday said movingly: "There are ideas! ”

Old lady: "Good idea, this world is not peaceful, military technology must be controlled, control is best in the hands of our country, I support you, young man!" ”

Downing: "Well, I've considered that even if the UK is not our homeland, it is the most suitable country to master this technology in our modern era. Even if the royal army doesn't have this technology, it is the most powerful in the world, but if this technology is reached...... Russia, for example, is a country with an insatiable thirst for territory, and its methods of ruling its colonies are so barbaric that they are not at all comparable to those of Britain. It is necessary to prevent a country like Russia from acquiring military high technology. As for the science of developing humanity...... Other technologies can, well, the spread of electricity is a good direction, and I'm ready to do two things while I'm repairing the sewers – repairing the underground cable and the unified heating system in London. These are two technologies that can be rolled out around the world. ”

Faraday: "Oh? If the cable is built underground, will it be too costly? ”

Downing: "Yes, but because we're working with the sewers, we're going to save a lot of money, and once it's built, it's more durable than it is on the ground, and those costs are paid back!" And such a London is more beautiful, there will be no wires everywhere. Another thing, unified heating, is actually related to making London more beautiful. The climate in London is relatively humid, when there is nothing to do, the sky is full of fog, and in winter it is even more amazing, every household burns fireplaces, burns black coal, and there is dust in the air, which is harmful to the health of the citizens, and after the unified heating, the coal burned by the heating plant must use a special process to control the coal dust, and the waste heat discharged from large factories such as iron factories and cement factories can be used to save a lot of coal, carbon and firewood, killing two birds with one stone. ”

He is worthy of being the biggest philanthropist in history, and even the air problem has been taken into account!

Faraday exclaimed: "What a great idea...... Is the money enough? ”

Tang Ning said bitterly: "So I'm going to work hard to make money!" If the parliament refuses to come out, I will put it on first, in short, we must clean up the environment in London and set an example for the world. This is also a serious warning, the development of industry does not necessarily bring all the benefits, so we must control the rhythm, the development of the development, the moderation of the moderation. The benefits to the country after the environment is cleaned are comprehensive. For example, if workers live longer, the more lasting the economic benefits they bring. What's more, a clean and beautiful living environment is something that money can't buy. So if you want to make money, you don't want to be healthy, that's a very low-level wrong idea! ”

Old man Faraday also completely fell in love with this young man, and the more he looked at it, the more pleasing it became. Why are you so enlightened at such a young age?

After having feelings, the old man cared about the young man's career: "Are there solutions to the key problems of power transmission?" For example, what to insulate? ”

Downing: "Vulcanized rubber." ”

In the past few hundred years, rubber has only been used by the indigenous people of South America as a "plaything" for the sacrifice of rubber people, and is most used as an eraser by the British. Until 1839 Charles? Goodyearle's invention of the vulcanization of rubber greatly improved the properties of rubber, and before that, the consumption of rubber had been sluggish, for example, in 1830 the world's rubber consumption was only 156 tons, all of which came from Brazil, because these natural rubbers became sticky in hot weather and brittle in winter, making them inconvenient for commercial use. After rubber vulcanization, it will be heat-resistant, cold-resistant, more elastic, and the quality will soar, so in the 50s, the rubber imported from Brazil in Europe reached the scale of more than 1,000 tons. The familiar Chinese name "Goodyear" is "Goodyear". Goodyear is a well-known Fortune 500 tire company, but not Goodyear's own company, and the hapless inventor, like many chemical pioneers, suffered from nitric acid, lead oxide and other poisons in his health, and his business is not going well. In the most important British market, his patents were snatched up.

After thinking about it, Faraday praised: "Good idea, rubber is ideal for insulators!" Rubber was something Faraday had studied, and he could imagine wires being wrapped tightly, and the famous Edison's solution was jute, which was the color of rope, which was far worse than rubber.

Faraday: "The most critical question – do citizens have a need for electricity?" ”

Don't laugh at Faraday's question, because by far the largest unit of electricity is the telegraph company, and their batteries are sufficient, because without electric lights, the horsepower of electric motors is too weak. The world's first public power plant was built by Thomas Edison, and it was with him that electric light was needed to create a power plant. Lighthouses also have electricity demand, but they are not large enough to become a large industry.

Tang Ning smiled: "Not now, there will be in the future." Because - I have already invented the electric light, and the teacher is free to come to me...... Oh, I'll send it to you tomorrow, and you only have to look at it to understand what the chances of using electricity in the future are. ”

Faraday's heart was shocked, and he was also exposed to the study of electric lights, because his teacher, the English chemist David David, in 1801, electrified the platinum wire to emit light. He also invented the electric candle in 1810, which utilizes an electric arc between two carbon rods for illumination. The biggest problem with these inventions was that they didn't last long, they broke off in a very short time, (less than a few hours), so Faraday quickly asked, "How long will your electric light last?" ”

Downing: "I've been using it for a few months. ”

Faraday didn't believe it: "Didn't burn out? ”

Downing: "Of course! The material I use is tungsten filament, which is very heat-resistant and can still be held when heated to an incandescent state. ”

Faraday bowed his head and muttered, "Tungsten...... Tungsten...... Wonderful! Wonderful! I'd love to see ......."

As a chemist, as soon as Downing said "tungsten", Faraday understood the key, because tungsten is the metal with the highest melting point.

Tang Ning: "Also, the power of electric motors is not high now, which is also the reason why electricity is not popular. I knew there was a way to generate electricity more efficiently. ”

The world's first generator was Faraday's "Disk" generator. Anyone who knows a little about electromagnetism knows that the wire cutting magnetic field line will produce an electric current, and the center and edge of the disc are connected to the brush, which is equivalent to multiple wires cutting the magnetic field line one after another when rotating, and the direct current is continuously generated.

Speaking of his proud work and becoming a work, Faraday immediately pricked up his ears: "What? ”

Tang Ning: "Teacher's disc engine has a disadvantage of increasing power - you use brushes to connect to the flying disk, so the speed is too fast to connect, or it wears out a lot. My idea is - no electric brushes. The effect of the wire-tangent magnetic field and the magnetic field rotating itself is the same, and we use the method of rotating the magnetic field instead of rotating the disk! In this way, the speed can be very fast. ”

Faraday: "Well, I've thought about this too, and you should know that the current generated in this way is unstable, it's alternating current, and alternating current is unusable......"

Downing: "Electric lights can use alternating current. Moreover, magnetic fields can be generated by electricity, right? If we use the same AC power source to turn on the motor and change the poles synchronously, then theoretically we can turn the motor, right? ”

The AC frequency is synchronized with the magnetic pole shift of the motor! Wow! It was so great, Faraday was blown away by the idea, it was the most gorgeous idea he'd ever heard tonight.

It made him feel that the other party was not only a genius scientist, but also a genius industrialist, and a sentence was still behind - Downing said: "The biggest advantage of using alternating current is long-distance transmission." Or according to the transformer principle you discovered, a simple single-phase transformer consists of two conductors. When one of the conductors has some unspecified current, alternating current or pulsed direct current, a fluctuating magnetic field is generated. According to the principle of electromagnetic mutual inductance, this fluctuating magnetic field causes the potential difference of the second conductor. If the second conductor is part of a closed circuit, then the closed circuit will generate an electric current. Electricity was then transmitted. This kind of non-stop electromagnetic oscillation transmission can make the alternating current transmit farther than the direct current, and it is better if the voltage is raised and then transmitted, which will make the power lost in the transmission process smaller. ”

Now, Faraday kind of understands why Downing can become the richest scientist, every key to the commercialization of technology is clearly thought out, step by step, and it is unreasonable for the money not to roll in.