- The first month of the seventh year of light and the seventh year

"Crackling! Cracking sound! ”

This is Ma Qiang's new firecracker, in later generations due to air pollution, he has not seen this thing for many years, and now he can finally have a good time!

Today is the New Year of Guanghe seven years, no matter what happens this year, at least it is peaceful now, and Ma Qiang is also desperately sprinkling welfare, so that the Red Star Camp can enjoy the last Taiping Spring Festival of Dahan up and down.

The history of the Spring Festival can be traced back to Yao Shun at the earliest, and there is a record of the Spring Festival in the Yao Shun period in the "Lü's Spring and Autumn Period".

The Spring Festival of the Han Dynasty is not much different from later generations, and the Chinese New Year's Eve dinner and ancestor worship are also reserved programs.

Thanks to the Han civilization passed down to later generations, Ma Qiang feels like he lived in his rural hometown when he was a child, making dumplings with green oranges today, and setting off firecrackers with Linzhi and white smoke tomorrow, which is really unhappy.

I don't know if anyone in Rome celebrates Christmas now, as if the Roman Empire is still opposing Christianity.

By the way, in the next two hundred years, Europe will have more people celebrating Christmas or Eid al-Fitr.

Maybe it's because of which religion the blacks believe.

Ma Qiang's head began to pump again, 404 warning!

"Happy New Year! Happy New Year!! ”

Lin Zhi walked in front, Bai Yan followed behind, at this time Bai Yan was already almost two meters, it hung two straw baskets on its back, Lin Zhi every New Year, there will be more snacks in his hands, what dried fruits, preserved meat, candied fruit, were stuffed into Bai Yan's grass basket by Lin Zhi, this is the treasure that she and Bai Yan share.

Like Linzhi, there are all the children in the Red Star Camp, according to Ma Qiang's requirements, from Chinese New Year's Eve to the sixth day of the new year, everyone is on holiday and resting, and the children are naturally no exception, finally they don't have to go to class but they are crazy now, from time to time you can hear a burst of crying, don't ask, it must be the parents who are beating the children.

As the so-called hitting a child on a rainy day, being idle is also idle.

Ahem, shoes and shoes, look at the child scared.

In the evening, after a Chinese New Year's Eve dinner, Ma Qiang came to the laboratory, where he was trying to make something simple, but epoch-making.

This thing that Ma Qiang is working on is called a spark transmitter.

Yes, radio.

Spark transmitters occupy an important place in the history of radio, and before the advent of tube transmitters, even the U.S. military used them to deliver messages.

The principle of the spark transmitter is actually very simple, that is, the high-voltage power supply constantly charges a capacitor, so that the voltage will continue to rise, when it reaches a certain voltage, it can reach the gap between the spark gaps, and then the voltage of tens of thousands of V is converted into a current pulse, which is formed into an arc to reach the circuit on the other side, which is the so-called LC oscillation circuit.

When the current pulse rushes into the LC oscillation circuit, it constantly oscillates back and forth between the capacitor and the coil inductance, "hissing" and "hissing", and at this time, if the energy of the oscillation is radiated through the antenna, this will form a radio signal.

How about it, don't you understand it at a glance.

Ma Qiang looked at Yan Fa and the others expectantly.

Ma Qiang shook his head in confusion.

"Do you understand? This time, I'll make an exception for you to listen to it. ”

"The camper... Don't say it, let Poor Dao cry for a while..."Gan Shi found that he seemed to be in a hurry, is this something he can learn now.

What's the hurry! The credit for finding Duan Ying back was wasted like this.

What a thousand miles of sound immortal art, phew! Swindler!

Seeing everyone's reaction, Ma Qiang couldn't help but be a little disappointed, I can't understand such a simple thing, when will I be able to play World of Warcraft.

Ay....

If you don't understand the principle, you can do it!

The spark transmitter does not require a tube, so almost only a variety of metal materials and wood are needed, and, of course, batteries.

Thanks to Qingcheng's efforts for so long, the dry battery is already sufficient.

And thanks to the commissioning of the pharmaceutical factory, sulfuric acid can also be mass-produced, so that a battery made of lead dioxide and spongy lead plus a bottle of sulfuric acid can also be made.

"Smack!"

As Ma Qiang pressed the electric button, there was immediately a crackling spark discharge sound, just like some gas stoves were electronically ignited.

"This is the spark transmitter, you see, after pressing it, the energy of this shock, which is the radio signal, is also emitted, even if people are thousands of miles away... Well, Qianli probably can't accept it, but tens or hundreds of miles should still be fine. ”

"Brother Pony, is this a mobile phone?" Qingcheng still remembers what Ma Qiang said about the mobile phone before.

"This is not as good as a mobile phone, this is also a simple transmitter, and it is very troublesome, such as this capacitor, which is much worse than a real mobile phone."

Ma Qiang uses mica capacitors, which are made by spraying a silver layer on the mica sheet as an electrode plate, and then superimposing the electrode plate and mica layer by layer.

In fact, there are cheaper porcelain dielectric capacitors that can be made, but this thing needs to add titanate to the ceramic, and Ma Qiang felt troublesome after thinking about it.

But either way, it's not small... It is completely incomparable with the delicate capacitors used in mobile phones in later generations.

"Then let's try it now!" Lu Qingcheng looked at the big toy in front of him with constant sparks looking forward to it.

"Yes, sir, how are we going to accept this?" Yang Chi also asked.

"Receiver I'm going to use the ore radio."

How simple is the ore radio, let's put it this way, this thing was part of the extracurricular homework of middle school students in the seventies and eighties.

Best of all, the ore radio doesn't require a power source! Just give it a pyrite, or why do you think it's called an ore radio?

When Ma Qiang led a group of people to the hillside, set up an antenna, and then plugged the ground wire into the ground, the so-called heaven and earth wire was actually a copper wire, and then asked people to call Yan Fa, who was left behind, to start sending a report.

Of course, Yan Fa doesn't know the Morse code, just press it randomly.

Ma Qiang brought the earphones up, and the earphones were made of Rochelle salt, which was boiled with wine tartar and kelp.

Thanks to the great Zhang Qian and Emperor Wu of the Han Dynasty, thanks to the two of them, Ma Qiang was able to make headphones.

"Toot toot . . . Toot Toot Toot Toot toot toot.."

This is probably the first time on this earth that a human has transmitted radio waves to other people, although neither the transmitted nor the transmitted ones know what this radio wave means.

"There's really a voice, little brother... What does this doodoo mean? ”

...

"How do I know, Yan Fa pressed it randomly, but we can set it." Ma Qiang simply told everyone what the Morse code was.

"The camper... I think this way.. It can be used in the school. Gan Shi said suddenly.

"What do you mean?"

"Recently, when I went to the school, I found that everyone is very slow to learn, and the reason is that it is difficult to learn rhetoric."

"Irony... What is it? ”

....

Everyone looked at Ma Qiang in disbelief.

What's the situation? I didn't know it was so weird?

"Camp master, how did you learn words back then?"

"Hanyu Pinyin.... Oh, I forgot.. There is no pinyin outside, so are you learning antiphony? ”

It took Ma Qiang a long time before he finally figured out what rhetoric was.

To put it bluntly, the anti-language is the ancient Chinese pinyin, the basic rule is to use two Chinese characters to spell a word phonetic, cut the word to take the initials, cut the word to take the finals and tone, and then simple, is Gwen... Get lost!

But since the rhetoric is also a kanji, it's not much simpler.

Ma Qiang went to the school to teach all the gentlemen, so naturally he would not encounter the problem of enlightenment, and the others had never thought of any other way than rhetoric.

All in all... Isn't that unfortunate?

When Ma Qiang sorted out the Chinese pinyin of later generations, the whole of the Red Star Camp was passing on the camp master to get the magic power of Shunfeng from the Taoist temple on the hillside....

Well, the Taoist temple that Ma Qiang called the biggest obstacle to science communication... The incense is more vigorous.

Hell yes!

Ma Qiang scolded viciously in his heart, and he didn't have the courage to smash the Taoist temple.

Lin Huanzheng was there with a large group of people to thank Haotian...

Forget it, love what's going on!