Travel through the Qing Dynasty and become emperor

Chapter 1046 Trembling Space
Von Neumann lived in Germany for several years and was fascinated by the brilliant achievements of German classical music. When he came to the Vault Lab, he brought this record player and a stack of classical music records in addition to his books.On the way here, the power supply part of this turntable was accidentally broken, and it was left idle for several months because the parts could not be found.Later, von Neumann bought some parts and prepared to assemble the radio and repair the power supply of the record player by himself.Considering that the record player is less concerned about electromagnetic interference, he replaced one of the two genuine transformers with a defective one that was to be scrapped.Back in the laboratory, he fiddled with the record player and installed a defective transformer on it. After a try, it was quite good, and he had to admire the quality of German products.

He wore headphones and adjusted the gain of the tester to the maximum. In the office, the rustling noise was a little less.He turned around several times, but there was still no response. It seemed that he could only agree with the investigation results of the Security Bureau.He saw that his favorite Beethoven's symphony "Fate" was still playing on the record player. Depressed, he put the shoulder strap of the tester on his shoulder and turned on the record player to listen to the music. "Squeak", strong radio clutter was stirred up from the transformer of the record player, he forgot to turn off the tester, turned the gain to the maximum tester, and faithfully transmitted this situation to Von Neumann's ears through the earphone .The sudden noise made his ears hurt, and he couldn't help yelling "Ouch!" But at this moment, he clearly heard his own voice in his earphones.

There are indeed bugs, and they are very weird bugs!He didn't take off the headphones first, but turned off the record player first.The strong noise stopped abruptly. He grabbed a harmonica from the table and blew hard, but there was no response from the earphones.He turned on the record player again and blew on the harmonica. This time, the sound of the harmonica came from the earphones.Got it, the bug is inside the record player, connected to the record player's power supply.

He couldn't wait to turn on the record player and carefully inspected the parts one by one.An hour, two hours, three hours, four hours, it's been such a long time, and there is nothing suspicious in the record player.If there is, it is impossible to hide it from von Neumann's eyes.In desperation, he thought silently, the transformer of this record player will emit clutter, if the clutter exists, the bug works, and if the clutter does not exist, the bug does not work.And the bug wasn't inside the record player.With a flash of inspiration, he ran outside, notified the security bureau, and quickly called in a low-power signal generator.Just 5 minutes later, the signal generator came.He called two people into his office, one of them manipulated the signal generator, the other, holding his harmonica, and von Neumann motioned them both to follow his gestures.

The signal generator was turned on, and the other person couldn't play the harmonica at all, and the harmonica was whining and out of tune.There was a strange harmonica sound in the earphones. Von Neumann searched the house carefully with a tester. When he reached the bookshelf of the table, he stopped, listened carefully to the earphones for a few minutes, and then carefully After analyzing the readings on the tester, he waved his hand, and the signal generator and harmonica stopped at the same time.He ran outside, took an electromagnetic shielding box from the car, put the bookshelf in it, closed the lid, and then asked the two of them to start working again. At this time, in addition to the regular sound of the signal generator in the earphone, There is no more harmonica sound in the headphones.

The bug was found, it was in the bookshelf.With doubts, von Neumann pushed the driver of the car into the passenger seat, drove the car himself, and under the guidance of the driver, he rushed to the contact station of the Security Bureau at a suicidal speed.

In the anechoic room with an ultra-wide frequency range, von Neumann took out the small bookshelf from the box and placed it on the stage of the high-power magnifying glass.He carefully opened the bottom cover of the bookshelf, revealing a gadget inside.He used tweezers with insulating rubber tips to pinch the gadget out, placed it on the stage, and turned on the white lighting around the magnifying glass.He was pleased to find that the spectrum of the lighting in this circle is almost the same as that of sunlight, that is, natural light, and there is no slight color difference on the objects, which is very comfortable for the eyes.He didn't have time to think about it, so he took a closer look at the bug. It has a diaphragm, a condenser microphone, and a coil, but it has no power supply. This thing has no power supply. What's going on?

He recalled the scene in the office, and in an instant, he understood, and couldn't help exclaiming, "Genius, absolute genius!" The people next to him gathered around and looked at him stupidly, and he explained, " The person who designed this bug is an absolute genius. This thing has no power supply and does not emit electromagnetic waves, so it is impossible to find it with passive radio direction-finding equipment. When it wants to work, it needs a beam of radio waves to shine on it. Work, the sound wave is transmitted to the condenser microphone, causing the capacitance to change, forming an LC oscillating loop with the coil, reflecting the sound signal after modulation, and receiving it by the receiver. This bug is usually impossible to find, and it does not need a power supply itself. , not when changing the power supply, so in theory, it can be used indefinitely!"

Everyone present was shocked, because they were all knowledgeable people, the principle was not complicated, and people who could come up with such ideas had no other words to describe them except geniuses.

Von Neumann found the key point to solve the case, and everything began to become clear.That night, he worked with people from the technical department to repeatedly measure the parameters of the bug overnight, wrote a detailed test report, and reported it to the Security Bureau.The case seemed to have nothing to do with von Neumann, but he couldn't relax at all. His experiment had been suspended for 4 days. Every day, there were many things waiting for him to do. He analyzed the process, and he The work was 5 days faster than planned, and today it has been the same. If you are still stuck tomorrow, you may not be able to complete the task.Thinking of this, he directly called Zhao Bingjun to express his concerns and show his loyalty.Zhao Bingjun remained silent on the phone for a long time. To be honest, Zhao Bingjun also wanted the tired scientist to rest for a few days. However, it seems that what he did was no less than that of a detective.Finally, he told von Neumann, tomorrow, I will let you go back to work in the laboratory.

On the fifth day, von Neumann was ready to return to his job.Sitting in the jeep, he couldn't hide the joy in his heart.However, he still doesn't know that there is another bad luck waiting for him when he goes back.

Von Neumann walked into his studio without hesitation, sat at the desk, and was about to tidy up and start working.Suddenly, he heard a slight ticking sound. Following the sound, he found a ticking time bomb under his pillow.Although, at this moment, his heart tightened, and his palms were unconsciously wet, but he did not panic. He looked at the bomb carefully. The bomb seemed to be very simple. At four o'clock in the afternoon, von Neumann looked at his watch, there were still more than two hours.A series of question marks appeared in his mind, there is still such a long time, just run away by himself, which pig will wait here to die?After thinking about it, if he left like this, wouldn't the laboratory be blown up?There is no way but to dismantle the bomb.The man who planted the bomb really tickled von Neumann's itch.He picked up a flashlight and illuminated what was behind the bomb's alarm clock.

Trap, another trap!Behind the alarm clock are two thin glass tubes perpendicular to each other. There are two drops of silvery shiny things in the glass tubes, and there are electrodes at both ends. This is mercury.Once the bomb is moved, the mercury rolls to one end of the glass tube, the electrodes are connected, and the bomb should explode.It's also a great idea.After von Neumann experienced the bug incident, his self-confidence has been completely defeated. Now he believes that sows fly in the sky when others tell him.Therefore, he was not too surprised to see the mercury level switch.However, there is a lot of space behind the alarm clock, so you can put needle-nose pliers in, break the glass tube, and the mercury will fall, isn't it all right?
Then, he carefully analyzed the circuit again. After confirming that there were no other traps, he directly took a spoon and put it under the tube. He used pliers to cut off the glass tube, and then cut off the wire connecting the alarm clock and the bomb detonator. nailed it.He swaggered and threw the bomb into the small lawn outside the laboratory building, like throwing away a clean apple core.He was still wondering, could it be that the secret agent's head was short-circuited?With such an advanced idea, to make such a low-level mistake?After making the phone call, the people from the Security Bureau came to close up. After a brief exchange, their expressions and their understanding of the mercury switch gave them a lot of benefits.

Next, von Neumann didn't have time to take care of things other than experiments, but he didn't seem to see his student Hu Siya these days.No. 12 days after the theft, the Security Bureau came.

The two agents who came to pick him up last time entered the door. Von Neumann became angry when he saw them.But they were only acting in accordance with the law, and they didn't embarrass themselves, so he kept the basic politeness and asked them to sit down.The two people looked around and did not sit down.Von Neumann raised his head in doubt, only to realize that there was no other seat in his studio.

The two people said straight to the point: "Mr. Neumann, the ins and outs of this incident have been thoroughly investigated. The main culprit is your student Hu Siya."

"Husiya?"

(End of this chapter)