The British Telegraph Company really made a big splash at the World Industrial Expo. The biggest reason is that its invention is extremely easy to use. It matches the typewriter, making it possible to popularize the telegraph machine. Not only can it own it, but also it can also own it, especially those companies that have branches in multiple cities. Many bosses want to set up a company to give orders and control their wealth network by strategizing. It can be said that life is a great pleasure. The typewriter itself has greatly improved the paperwork, and thousands of women have begun to enter.

Entering the labor market, they were quite harmonious in typing. It was the duty of the female secretary to assist the bosses in doing some trivial work. When the British Telegraph Company was established, this combination of heaven was created. This was the greatest liberation of women after the large number of textile workers entered the labor market. The most important way toward freedom was financial freedom. The birth of the typewriter created a huge female labor market. Due to the desire for labor brought about by the industrial revolution, British society began to not exclude female labor.

Britain is the economic center of the world, with a large number of documents requiring typewriters and "copiers". Downing's invention adds icing on the cake to the peak of London. When the Times reported on typewriters in large quantities, his invention even shocked Queen Victoria and her husband Prince Albert. Prince Albert was the main person in charge of the World Industrial Fair because he was the chairman of the Royal Society of Art.

The assistant of Prime Minister John Russell (the philosopher Russell was his grandson) went to the booth of the British Telegraph Company to inform them that the Queen and the Prince would come to observe their telegraph machines and typewriters, and asked them to do a good job of receiving the work, so that those who know the invention best would introduce their invention to the Queen and the Prince. Is it worth mentioning that the person who knows the best? They must be the inventors, and others know very little about electromagnetics.

The basic principles of electromagnetics will inevitably become the focus of conversation when the powerful and powerful come.

While wandering in the Indian Ocean, Downing originally thought of finding a teaching position at Cambridge University to balance the influence of the East India Company, a trading tycoon, on him, but at the end of the journey, he became good friends with the financier Rollinson, and later he had an enthusiastic Smith family financiers as ally. He already had a good capital to gain a foothold in the East India Company, so he forgot about this. When he received the news that the prince was coming, his mind became alive, because Prince Albert was the president of Cambridge University.

This year, the prince and the queen were both 31 years old. The queen was a few months older and was her husband's cousin. In this era, there was no biological understanding of closeness to marriage, and the royal family also particularly liked marriage between cousins.

In order to win the favor of the Cambridge principal, Tangning tried to use simple knowledge to introduce the principle: "Light is the fastest speed in the world. The medium of radio transmission is a close relative of invisible light. The speed is the same as light. I call it a radio wave. The difference between it and light is the difference between wavelengths. The wavelength of radio waves is much longer than light, which means that it can bypass obstacles and spread to far away places. Everyone knows that the earth is spherical. If the wavelength of radio waves is long, can it bypass the earth and pass to the other side? After my experiment, it is OK! Why? Can it be created?

So exaggerated radio waves? In fact, the advantage of a longer wavelength radio wave is that it is not easy to lose, and the real secret is that there is a layer of radio waves above the sky that can reflect radio waves! In this way, the radio waves emitted to the sky can oscillate back and forth in the sky and the surface of the earth, and in theory can propagate to any corner of the earth. After our experiments, this is true. By quickly turning on and off the radio wave transmitter, we can spread information like wired telegraphs, and it is faster than cables. You must know that the speed of radio waves is the same as the speed of light, which is about 300,000 kilometers per second!”

The principal did have two brushes, but in fact, the prince's mathematics was good. He asked the idea: "Mr. Windsor, I have a puzzled point, why is light the fastest speed? If I run at another speed in the opposite direction of light, then wouldn't it produce a new speed, and it's faster than light?"

Although it was a tragic building, Tang Ning still patiently expressed his opinion: "Principal, according to my measurement, the speed of light is the same in all directions, which means that nothing can generate new speeds in the way you said."

Albert: "Isn't this very strange? Why?"

The principal seemed to be examining talents. Tang Ning felt this and said happily: "If the speed of light in a vacuum is a constant. According to the classical mechanics' view of space-time, this conclusion should only be established in a specific inertial reference system, which is the ubiquitous medium ether in the universe. The speed of light measured in other reference systems is the vector superposition of the speed of light in the ether and the speed of the reference system where the observer is located relative to the ether reference system. What you just mentioned is this superposition, and there is a way to solve this contradiction - if the observer moves at a certain speed relative to the ether, the length shrinks in the direction of movement, offsetting the difference in the speed of light in different directions, which is OK."

This is the Lorentz transformation hidden in the theory of relativity. I hope no one noticed this bombshell that negated Newton's view of time and space, otherwise Tangning would be in trouble. He wants to explain the theory of relativity clearly? He is going to die.

Since Tangning said it casually, the scientists and engineers who accompanied the prince thought it was a joke. It was crazy, how could the length of the space shrink?

Of course, this "joke" is very imaginative, and the principal is very satisfied, and it is no longer a mistake: "How is the network of the British Telegraph Company being built? Are there any difficulties?"

Downing: "It went smoothly. Wireless telegraphs can be used in the UK. Europe, India, America, and Australia are all planning. Soon, just carry a small telegraph machine on the oceans of the world to communicate with major cities around the world. It is very suitable for ships to be installed on ships, and the navy will like it. You can also quickly contact nearby ships when a shipwreck occurs. Of course, this ideal requires most ships to be equipped with wireless telegraph machines. It is for this ideal that I invented the typewriter by the way. Such a combination can enable everyone to learn to send telegraphs. And I am trying to reduce the cost of using wireless telegraphs for the first time. The annual fee is 100 pounds per year, less than one percent of a large ship. It is more than going to an insurance company to insure. After all, property losses can be earned, and life will never be found again."

The Prime Minister said, "Ah, yes, it can be used on warships. This... is amazing. This is a great revolution for the military command system."

Downing was smug to impress the Prime Minister, but Prime Minister Lord Russell whispered: "This is a big deal, so don't leak this technology to other countries easily."

Tang Ning was stunned. This... this is not consistent with his ideal. He wanted to run a telegraph company in a permanently neutral way, but...

A cold water was poured down, and he was proud to join the British head of government just now, but found that he might be trapped in the UK. This was not what he wanted, and he wanted to go back to China.

It doesn't matter if he challenged Rothschild. If he challenged the British government, he would have nowhere to escape. If such a law-oriented country, after a decree, his permanent neutral plan would be still in the womb.

Tang Ning, who was hit, became absent-minded in the subsequent explanation and answers, and the blind man could see it. When the prince and his wife were about to leave, he almost forgot his Fermat's theorem. Even if he didn't forget, he just said indifferently: "Principal, when I came to London by boat from India, I solved a math problem. At that time, I hoped to find a Cambridge chair. If it was convenient, please hand it over to a mathematics professor who was interested in the Fermat's conjecture. Of course, if you have to work hard for the British Telegraph Company, it is impossible to do a full-time professor."

Prince Albert was more interested in natural science than mathematics and said: "If you want to be a professor, it is also physics. This seems more interesting. It is better to write a paper on the principles of radio to the professors."

Tang Ning smiled and said, "Do you want to say that physics is more practical? In fact, mathematics can also be practical. For example, I can build an automatic calculator. This is the work that mathematicians do, and I will complete it when I have time."

Albert praised: "Very good. I'm very optimistic about this project. It seems that you have a deep understanding of mathematics. I will hand it over to the best mathematics professor in Cambridge to see it."
Chapter completed!