Roland picked out a lead box, opened the lid, and held the silver-white metal block inside in his hand. He felt its heavy weight and it was not much different from a piece of pure iron before it was stimulated. As long as it was not put in its mouth and licked it for a few bites, it could be regarded as basically harmless. If it weren't for a deep enough understanding of it, it would be hard to imagine just looking at its appearance, and how amazing power it contains in its small body.

It is precisely because of it that humans have touched the threshold for mass-energy transformation for the first time.

Compared with all the chemical gunpowder before, this step has taken a new level.

Roland roughly counted the number of lead boxes, about fifty. Putting aside the weight of the container, each box was calculated based on one kilogram of storage, which was a total of fifty kilograms of uranium 235, and its purity was nearly 100%.

And there is more than one lead cabinet like this in the room.

If they were poured together...

Maybe the institute is really "high-energy"?

"How do you use these things to turn into the sunlight you mentioned before?" Nightingale curiously, "Make a special machine, or ignite it? You always feel that they can't burn it."

"Want to know?" Roland couldn't help laughing, "It's simpler than you think. Just pile the metal blocks in the box together and they will automatically emit light and heat. The uranium in this cabinet alone is enough to razure Wu Winter City to the ground, so Lucia's responsibility is heavy, if you shake your hands."

The scene suddenly fell into a dead silence.

Lucia covered her mouth, and a look of horror appeared in her eyes.

"...No," Aqima said after a while, and it was unbelievable, "You mean, if you are not careful, we may destroy the whole city?"

Nightingale even jumped into a flash, snatched the lead box from Roland's hand and put it back into the cabinet, then grabbed his hand and dragged it outward.

"Hey...wait, what are you going to do?"

"Do you still need to ask?" Nightingale said anxiously, "Of course you will take you out of the city and then let someone transport these things away! Lucia, go and notify Wendy and ask her to contact the Executive Hall!"

"I...I'll go find His Highness Tilly, too," Aqima gritted her teeth, "Only she can scream the Maleficent Curse."

"I'm kidding when I stop"

The room suddenly became a mess, and it took Roland a long time to calm everyone down.

"Are you sure you're just kidding?" Nightingale said angrily.

"Ahem, of course... I'm talking about the principle," he added quickly, "but it's not that easy to achieve the inspiration. Even if I put all my strength into it, I may not guarantee success."

Lucia breathed a sigh of relief, "Your Majesty... you scared my feet soft."

"It's not funny," Nightingale glared at him, "if Wendy and Shuju hear this, whether it's a joke or not."

"I'm afraid they will ask to move the new institute far away from Wu Winter City, right?" Roland said helplessly.

"It's fine you know, or move you to a safe place."

"Well, when I haven't said the previous words..." He cleared his throat, "As long as you don't say it, Wendy and the Book will not know."

"Maybe a certain bird has heard it." The nightingale glanced out the window.

"Seave the news down, a bottle of Chaos drink." Roland said without hesitation.

"Trade." She blinked and disappeared in front of the three of them.

Looking at Lucia and Akima who were stunned, Roland shrugged, "Uh... don't care, this is part of the joke."

A moment later, the Nightingale returned to the house, "no suspicious target was found, but the reward was paid."

“It’s still valid.”

Her expression finally calmed down, and she hummed a little tune and went to chew the dried fish.

"That... Your Majesty," Aqima hesitated before saying solemnly, "What you said before is not all jokes, right? Because when formulating the rules, you repeatedly emphasized the need to pay attention to weight, and in order to confuse or incorrectly, you even precisely control each lead box to four kilograms, and weigh the containers, so as to ensure the equality of the metal blocks contained in the box to the maximum extent." She paused, "Also, if you say that if an accident occurs in the institute or there are signs of someone else breaking in, the first thing you need to do is notify the guards to block the scene, and then immediately return to the castle to report, instead of entering the yard to check the situation. This proves... they do have certain dangers, right?"

Roland looked at her unexpectedly, "Good observation. You said it is basically correct, in addition to toxicity, weight is also one of the key elements. This is the purpose of separation and opening. "It is possible to judge the nature of the extract from the rules and regulations, which is considered to be cautious and meticulous. It is this carefulness that has awakened her ability to trace the origin... "But weight alone can only endanger the institute. If you want to turn it into a weapon against the devil, you need another thing."

"Those particles placed separately?" Aqima quickly reacted.

"Not exactly, but at least half the guess."

The composition of natural uranium ore is very complex. In addition to uranium compounds, it is usually accompanied by a lot of radioactive substances. Most of them are secondary products after decay. Some have completely lost their radioactivity and become stable bodies, while others are still on the long road to decay. Although the radios have initially refined the ore when building the curse temple, the basic components are still roughly the same. This can be seen from Lucia's refining results.

The most abundant content is uranium 238. Although it cannot be used as a weapon, it can be identified by the Rubik's Cube. Its effectiveness is almost the same as that of uranium 235, so it is all sent to the backyard of Beiposhan.

The second is uranium 235. If the purity reaches more than 90%, it can be regarded as a weapon level. The natural content is extremely low, accounting for only 1% of the natural uranium elements. Therefore, the first difficulty encountered when you want to take the "brilliant radiation" route is refining, and this is also a hurdle that most people cannot overcome.

But it is not the rarest subsequent decay products such as thorium, radium, radon, polonium. In theory, each one is rare, and what Roland needs is the naturally occurring polonium 210, which is also the most common isotope in the Porn family.

As a flower of the motherland cultivated by nine years of compulsory education, Roland is familiar with the two elements of radium and porin. The Madame Curie, which was repeatedly mentioned in the textbook, was left in history because of the discovery of them. Although the half-life of Polygon 210 is only more than a hundred days, and its content is so low that Madame Curie's multiple extractions have failed, she still pointed out its existence from the powerful radioactivity shown by the ore dissolving solution.

Whether it is radium or polonium, it can be used to manufacture neutron sources. This is also related to the second difficulty of brilliant radiation: detonation.

The principle of the first generation of nuclear weapons is very simple, even so simple that it can be summarized in one sentence: nuclide fission releases energy. Specifically in uranium, uranium 235 will be excited into unstable uranium 236 after receiving a neutron, and then split into two lighter nuclides and more free neutrons. The poor mass between them is converted into energy.

Obviously, the released neutrons will hit other nuclides. If this cycle continues, it will be a chain reaction, and the huge energy bursting out at the same time is no different from an explosion.

However, in the microscopic world, the gap between the nuclei is like the world as written in the textbook. If the atom is regarded as a football field, then the nucleus is just an ant on it. If you are not lucky, the neutron will soon fly out of bounds and the reaction will stop. To ensure that each ant is hit, you obviously have to pile up enough stadiums on its periphery to ensure that no matter which direction the neutron flies, there is an ant crossing its path.

Reflecting to the macro world, the obvious ones are mass and shape.

In fact, the critical mass is not a fixed value, just like a stadium lined in a straight line, obviously not as good as a stacked stadium in terms of probability of being hit. The specific results need to be calculated based on its shape. Roland also heard an anecdote that the war failed because someone miscalculated the data. Of course, as a latecomer standing on the shoulders of a giant, he naturally did not have to start from scratch. Countless experiments prove that when an object is spherical, the critical mass is the smallest, while uranium 235 is fifty-two kilograms.

It was a prudent enough to limit the stock of uranium in each lead box to one kilogram.

But as the saying goes, the critical mass is not fixed. If the area of ​​the field can be greatly reduced or enough extra neutrons are provided for nuclides, its critical value will drop significantly. The former is the principle of the internal detonation bomb, which is arranged on the periphery of the bomb body. During the explosion, the reactants are instantly squeezed into one place, increasing its density sharply, thus exceeding the criticality. For the existing technology of Wu Winter City, whether it is calculating the critical mass of irregular monomers or accurately controlling the centripetal detonation of the explosive, there are too many difficulties, so Roland turned his attention to the latter.
Chapter completed!