African Nationhood

Chapter 272 The radio communication experiment was successful
  In August 1889, Kelly gave birth to a son, and Shi Jintang named his third son Shi Zhao.

Not long after Kelly gave birth, Ye Rong discovered that she was also pregnant, and Shi Jintang was very happy about this.

He is now worried that having too many children will dilute his father's love.

But soon he was so troubled by his several children that he had no time to worry about these things.

……

In September and October 1889, Hertz, who was far away in France, published two papers "Basic Electromagnetic Equations on Stationary Objects" and "Electric Radiation Effect" one after another.

In these two papers, he used detailed experimental data to prove that light, like electromagnetic waves, has all the characteristics of waves.

At the same time, he also demonstrated that in every flame and every luminous particle, there is an electrical process.

Even if an object does not emit light, as long as it emits heat, it is the center of electrical disturbance.

The influence of these two papers is very powerful, and it is these two papers that opened the curtain for the world to enter a new era of electricity.

……

Shi Jintang sent a telegram to congratulate him and at the same time strongly invited him to visit Southwest Africa.

Because of Hertz's fame, various parties in Europe invited him to give lectures, so he euphemistically expressed that he might have to wait.

Naturally, Shi Jintang wouldn't mind, and hoped that he would come over at the beginning of 1890. Hertz immediately agreed.

……

Shortly after Tesla published his paper at Hertz, he successfully developed the "Tesla No. 1" high-frequency AC generator in the laboratory of the Anhai Town Arsenal.

The power generation frequency of this prototype reaches 15000 Hz, which is an amazing invention.

Shi Jintang immediately arranged for people to go to Europe and the United States to apply for a patent for this new generator. At the same time, he pulled Tesla to study how to use the "spark oscillator" published in the Hertz paper.

The electromagnetic waves excited by this instrument can serve as communication signals.

Tesla was immediately deceived by Shi Jintang. This was a very thoughtful research, and it verified this experiment. Can it be used to remotely control other devices?

Thinking of this, Tesla's mind was immediately filled with all kinds of fantastic ideas. He pulled Shi Jintang and the two of them together to start building a "spark oscillator".

The "spark oscillator" requires a high-voltage electrical pulse of 3 volts as the source of electromagnetic wave excitation, and Tesla's newly invented 15000 Hz alternating current generator came into being just for this purpose.

However, alternating current is not as stable as direct current. Therefore, after discussing with Shi Jintang, Tesla decided to develop an instrument called a "voltage stabilizer" to stabilize the voltage of the alternator.

After more than a month of research, Tesla came up with a voltage regulator composed of ferromagnetic coils. This component was very crude, but the effect was very good. It successfully turned the electricity generated by the alternator into a stable output current.

With the stable voltage, the electromagnetic wave transmission experiment was officially held.

The first test was the 100-meter range, and the experimental results were successful, then 300 meters, 500 meters, and up to 1000 meters.

The results were all successful. Both Tesla and Shi Jintang had smiles on their faces, and they continued to improve the experimental equipment.

Previous experiments were conducted under laboratory conditions. To achieve long-distance transmission, current experimental equipment must be improved.

First, both the metal detector and the transmitter must be equipped with antennas to transmit and monitor electromagnetic wave signals outdoors.

In addition, it was necessary to increase the power of the transmitter. After Tesla and Shi Jintang discussed for several days, they increased the voltage of the transmitter to 5 volts and started testing.

In order to better distinguish the fluctuations transmitted over long distances from electromagnetic wave signals, Shi Jintang proposed to send the pulse waves from the transmitter in the form of Morse code.

Tesla readily accepted this suggestion and praised Boss Shi for his quick thinking.

So Tesla improved the pulse generator of the transmitter and turned it into an artificially controlled radioactive electric pulse signal. Shi Jintang smiled and said nothing and continued to experiment.

The location of this test was between two dams in Anhai Town. The two places were nearly 10 kilometers apart, which was perfect for testing.

The launch site was still the Anhai Town Arsenal, where the experimenters set up a tall radiation signal antenna.

On the top of the three-story building of Nanhua Medical College, Shi Jintang also had a receiving antenna set up.

Tesla launched the Morse code "hello" at the Anhai Town Arsenal at 10:03, and Shi Jintang, which was far away on the second dam, also received the signal "hello" at 10:03.

Shi Jintang burst out laughing after seeing the signal received, and the surrounding students also cheered happily.

People in the surrounding rooms were curious and asked, what happy thing happened to make Mr. Shi so happy?
  ……

Shi Jintang directly picked up the phone and called the Anhai Town Arsenal. The first sentence he said was "hello". Tesla on the other end of the phone replied excitedly: "hello".

The next attempts were even crazier, 20 kilometers, 50 kilometers, and even 500 kilometers.

The results of the experiment were all successful, but the farther the distance, the greater the power required by the transmitter, and the cross-section of the receiving antenna also needs to be expanded accordingly.

This is too much of a burden for the AC generator set and is not suitable for large-scale promotion. After all, it is impossible to build a high-power generator set to power the transmitter in every place.

When Hertz arrived in January 1890, it coincided with the Spring Festival celebrations in Southwest Africa.

Hertz was impressed by the excitement and prosperity of Southwest Africa, and was even more amazed by the powerful actions of Boss Shi and Tesla.

He finally remembered what Boss Shi said to him on the beach in Cannes a few years ago, and now it has actually come true.

After he understood all the experimental procedures and subsequent improvements of the two people, Hertz sincerely expressed his admiration and praise to the two people.

Shi Jintang didn't have time to listen to his rainbow farts. If he had the time, he might as well go have fun with his wife and children.

Because of the arrival of Hertz, Shi Jintang was finally freed from Tesla's entanglement, and the 500-kilometer range of radio communication was sufficient.

Several large urban bases in Southwest Africa can achieve real-time communication, and the rest can use relay signals.

As long as signal transmitting and receiving devices are deployed at key nodes, current military communication requirements can be fully met.

With the arrival of 1890, the honeymoon period between the Nanhua Company and Portugal was coming to an end.

Because the British will turn the Kingdom of Zanzibar into a British protectorate this year. Without the Kingdom of Zanzibar as a black slave sales base, the Portuguese will be useless.

In addition, Nanhua Company can completely handle the transactions with the French by itself, without having to act as a middleman for the Portuguese.

……

At the same time, the new Governor of Natal took office, and it was Cecil Rhodes.

This result surprised Shi Jintang. How did this guy manage to reach the Natal Colonial Government?

After this guy took office, he immediately ran to Anhai Town to find Boss Shi to discuss cooperation.

The method of cooperation was exactly what Shi Jintang had intended for the Portuguese East African colonies. Faced with this sudden benefit, Shi Jintang couldn't help but wipe the saliva from the corner of his mouth.

"Governor Rhodes, happy to cooperate!"

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  (End of this chapter)