Lin Qing is different from many tourists, most of them will gather around the first stone placed in the mineral hall after entering the door. Pen, fun, pavilion www. biquge。 info

Visitors from Europe thought it was the glory of Europe, while visitors from the rest of the region came to see what kind of stone caught Columbus's eye.

As for American tourists, there are very few Americans who come here at all, and they are busy earning dollars all over the world.

Monica was just about to tell a little about the history of this stone when she saw Lin Qing pulling Ivanka away quickly, looking around with some embarrassment, and trotting to follow.

At this time, an administrator stopped Monica who was running: "This lady, running is forbidden in the museum." ”

Lin Qing, who was a few steps ahead of Monica, stopped when he heard it, and was just about to turn around and ask, when Ivanka shouted: "What happened?" ”

At this time, another manager walked up to Ivanka and whispered: "Madam, please keep your voice quiet, thank you for your cooperation." ”

Lin Qing walked up to Monica and asked curiously, "What's the matter?" ”

Monica smiled wryly and shook her head: "I forgot the new rules of the museum, no loud noises, no running. ”

Lin Qing nodded and apologized in proficient English: "I'm sorry, we didn't listen to you carefully just now, I'm very sorry." We'll be sure to pay attention! ”

After finishing speaking, Lin Qingyuguang swept the ground and didn't find anything special, but when he turned his head, he found a problem, and at the location of the passage, he actually found a line of small words on the screen of his eyes: "ZT100 vibration sensor." ”

Lin Qing immediately understood why these managers did not allow the people in the museum to run, and when people were running, they would cause vibrations, and once the vibrations reached a certain frequency, they would cause alarms.

Lin Qing apologized while wearing Ivanka and Monica and continued to visit the gem.

However, the words of the second guard just now made Lin Qing feel a trace of unusual taste, generally speaking, there should be no decibel of speaking in these museums.

However, because of the natural atmosphere of the museum, people who enter the museum will involuntarily lower their voices, and many museums do not list the prohibition of loud talking.

However, the Natural History Museum was reminded by the administrator of the museum alone because of its loud voice, and Lin Qing couldn't help but start thinking about this problem.

Lin Qing guessed in his heart that something like a sound detector should be installed in this museum.

As the name suggests, sound detectors give a value according to the magnitude of the sound to determine whether the surrounding environment is noisy, and generally will be installed in libraries, laboratories, hospitals and other places that need to be quiet to remind people to be quiet.

If you put this kind of equipment in the museum, when the museum is closed at night, set a fixed decibels, such as 10 decibels, once the sound in the museum exceeds 10 decibels, it will cause an alarm, which is also a very powerful means of defense.

After all, the museum is very well soundproofed, and even the hustle and bustle of the street at night will not affect the museum.

The sound of 10 decibels is very small, the normal sound of people talking is about 50 decibels, and 13 decibels is equivalent to the hum of a light bulb, and people can hardly hear this sound when standing under the light bulb.

If you put it more figuratively, 15 decibels is equivalent to the sound of a pin falling from a height of 1 centimeter from a distance of 1 meter away.

It can be seen how small the sound of ten hundred belongs is, the sound of the spider silk launcher in Lin Qing's hand is definitely higher than ten ten belongs, even if Lin Qing does not use it, the sound of walking is usually more than ten ten belongs.

In order to test his guess, Lin Qing walked around the museum looking for possible sound collectors.

The hard work paid off, after Lin Qing looked for a while, he found that there were some places in the museum display cabinet that had a raised device similar to a small microphone, if you didn't pay attention to it, most people would think it was just a decorative item.

Lin Qing was keenly aware of this, because almost every time less than half a meter around, there would be such a small trumpet-like thing, if one or two can be understood as decorations, but the whole museum is everywhere, then this thing must have its special features.

However, what made Lin Qing feel strange was that the equipment detector on his eyes had no effect.

Lin Qing's guess is really good, those ordinary miniature microphone things are indeed sound collectors, as for why the sensor on his eyes is useless, it is entirely because this sound collector does not belong to the monitoring equipment.

The most common thing that everyone sees is on the scene of a movie or TV series, where there will be a sound engineer carrying a huge microphone-like thing, and now what Lin Qing sees is a miniature version of that thing.

So this thing is just a magic solution that the museum's security consultants thought of on the fly, and it has not been mass-produced, nor has it ever existed as an anti-theft device on its own.

Therefore, the big data in Lin Qing's eyes did not enter this thing, which caused it not to be displayed.

Lin Qing held his glasses with his hand, and continued to walk forward slowly, while walking Monica began to enter the formality, constantly introducing some precious ores around.

Most of the ores here are not safes, they are individually fenced with guardrails, or a glass wall is simply separated, and most of the ores are still allowed to be touched, such as the huge copper mine in front of Lin Qing.

"This is the highest ore content in the world's largest copper mine, with a mineral content of 99 percent, which can almost be said to be a piece of pure copper, and how amazing it is that nature can naturally produce a piece of pure copper that can be used almost without tempering."

Lin Qing already had a general understanding of some defensive methods, so there was no need to look around at the beginning, listening to Monica's introduction with interest, and nodding with interest from time to time, it seemed that he was very interested in these copper mines.

Monica is a professional tour guide, although she has not been to the Natural History Museum for a while, but she knows most of the things in the Natural History Museum well, and every time she comes to a piece of ore, she does not need to watch the above introduction, she can tell the origin of this ore.

Lin Qing couldn't help but be secretly surprised, sure enough, he had a specialization in the art industry, Lin Qing thought that if he was himself, he would definitely not be able to do this, it would be too difficult for Lin Qing to carry so many things. (To be continued.) )