The essence of wireless communication is to control the frequency of electromagnetic waves.
As long as the current fluctuates, a correspondingly changing magnetic field will be produced. In other words, the first thing Xia Fan has to do is to make the electric energy of the streamer technique change rapidly - or tremble.
The detailed control of the opponent's technique has already matured through more than a thousand repeated performances.
It only took him two days to use his new streamer technique to let out a sharp scream. This "sound" has an extremely high frequency and cannot be captured by the human ear, but in the electromagnetic background, it is like a raging ripple, spreading out around Qiguo in an instant with Fengyang Villa as the center.
Xia Fan witnessed all this through the swinging magnetic needle.
Like the Shock Technique of Justice, this new technique based on the Flowing Light Technique should also have a unique name.
He named it "Xunyin", taken from the second half of a groundbreaking electronic music song.
The next step is to make the magic weapon.
This was also the revelation given to him by Mo Yun's Heavenly Motion Instrument - Xia Fan never hoped that only he could perform this technique, otherwise he would have to stay at the reporting office no matter what, and become part of the communication equipment. In that case, where would there be time to amuse the fox demon
Mo Yun also spared no effort in teaching how to make magic weapons. He almost taught him step by step to carve out the first vibration magic weapon of the Sound Technique.
The trick is to concentrate Qi on the fingertips, and while carving the talisman, focus on the effect you want to express.
The key is the idea.
The clearer the idea, the higher the final yield will be.
This is also the key difference between carpenters carving sculptures and alchemists carving magic weapons.
The talisman Xia Fan chose was naturally a oscillation circuit - it only consisted of a power supply, an inductor and a capacitor, representing the most basic principle of resonance. After all, no matter how advanced he was, he couldn't draw it. In addition, the place where the power supply should have been was replaced by a streamer talisman. On this artifact, the essence of the two eras was combined for the first time.
"Okay..." Ning Wanjun put down the magic weapon and circled around the equipment he prepared several times, "How do you prove that it can... um, long-distance communication?"
"Just wait." Xia Fan said calmly, "I have asked Li to go to the Privy Council House, and she will contact us there."
"Privy Council Mansion?" The princess glanced in the direction of Jinxia City, "You shouldn't be able to hear the shouts from this distance. So... what will I see? Is it a note that appears out of thin air, or -"
Just when she was mid-sentence, there was a sudden hissing sound coming from the receiver.
Then, Li's familiar voice sounded in front of everyone, "Xia Fan... can you hear me? Hey... that's how this thing should be used, right? In case... hey... remember to reply to me as soon as possible... "
The voice was intermittent and accompanied by obvious noise, but even so, it was indeed Li who was speaking!
This scene made everyone present look shocked!
Xia Fan calmly drove the sound meter, turning his voice into high-frequency radio waves and emitting them, "I heard your voice."
After a short pause, a voice came from the other side again, "That's it... oh... that's good."
When Li's words fell to the ground, the scene immediately exploded!
"Is this true? Miss Li is in Jinxia City now?"
"It's three or four miles from the villa to the Privy Council Palace!"
"The thing making the sound seems to be this drape—"
"Master Xia, can only alchemists use it?"
Some were in disbelief, some were looking around for Li, and some were asking Xia Fan questions... For a while, the lobby door became agitated.
"Okay." It wasn't until Princess Guangping spoke that everyone stopped talking, "If I remember correctly, there is a spell in Xun Shu that can amplify the sound several times, but the distance is extremely limited? It is impossible to have a back-and-forth conversation like you. Xia Fan, how on earth is this thing done?”
In fact, Ning Wanjun was no less shocked than others at this moment? What if she and Xia Fan were the only ones present? She probably couldn't help but stepped forward and asked to experience it.
Now that there are so many people watching around her, she has no choice but to continue to maintain her dignity as a princess? He asked pretending to be calm.
"Vibration can turn sound into invisible electromagnetic signals. As long as you have the right equipment, you can restore the signal to sound? This is the basic principle of the audio signal device." Xia Fan explained concisely.
"Electric... what signal?"
Everyone was dumbfounded after listening to this? Clearly this was beyond their comprehension.
Xia Fan didn't intend to go into details, because this was not something that could be explained clearly in one or two sentences. The effect of the spell depends on the consciousness of the caster. This is why he can let the current vibrate according to his own ideas, thus skipping the two thresholds of wired communication and wireless telegraphy? The key is to get it right in one step.
Leaving aside the shock technique? The receiver is something completely unrelated to alchemy. Is that a simplified version of the mineral radio, using pyrite as the detection core, which can re-convert electromagnetic waves into shocking currents, and use it through the interaction of copper wire coils and magnets? Reduced to the speaker's voice.
It can't modulate frequency, and it doesn't have filtering function? This results in continuous noise when transmitting messages, and the sound quality is only at the level where you can clearly hear what the other party said. But just such a thing took much longer than researching new alchemy. Just a piece of suitable pyrite made Xia Fan rummage in the blacksmith shop for several days.
Ore radios were popular in the streets of the motherland in the 1960s, and parts could even be purchased at canteens. Although Xia Fan did not experience this era personally, he had tinkered with several collectibles at home. Even so, it took him a lot of brainpower to piece together a simplified version of the receiver using the materials on hand.
Fortunately, after repeated attempts, the first principle machine finally met his most basic requirements.
"Ahem... I'm not asking about the principle." Ning Wanjun immediately realized that her way of asking the question was wrong, and immediately changed the way of asking, "Do we have to be Qi-sensers to communicate with each other?"
"It is necessary to send a message, but not to receive it. The sound emitted by one audio device can be heard by multiple receivers." The biggest advantage of the mineral radio is that it is easy to use and does not even require a power supply.
"How far can this sound travel?"
"It's only a few dozen miles at the moment." Xia Fan estimated. After all, the audio device and receiver are quite crude, and there is still a lot of room for improvement in the future. "When it is fully formed, it should not spread throughout Daqi." question."
In fact, let alone the Great Qi, even the Six Nations will be shrouded in invisible electromagnetic waves.
"Then... what are its limitations?" Ning Wanjun couldn't help but clench her hands and asked. A magic weapon that can transmit sounds thousands of miles and can be restored at any time is definitely what the army dreams of. The battlefield situation is changing rapidly. Whoever can gain an advantage in intelligence can seize the opportunity!
"Except for those who feel Qi, there are no restrictions."
"It has nothing to do with terrain, weather, day and night?"
"Yes." Xia Fan affirmed. As one of the epoch-making products, how can radio be such an inconvenient thing
"I understand." Ning Wanjun raised her head and patted him heavily on the shoulder, "Try to formulate a charter for the proposal you mentioned at the meeting before."