"Uranium? Where did you get that? ”

Lin Ling glanced at the bucket that Jiang Chen had thrown in the corner with disgust, as if she was looking at something dirty.

In the process of "wrestling wrists" with the mutant octopus, the drive system of the mechanical exoskeleton was slightly damaged due to Jiang Chen's opening of the frenzy. In order to prevent the chain from suddenly falling off when returning to the sea, after dealing with the mutated octopus, Jiang Chen returned to the end of the world with this suitcase.

After throwing the equipment to Jiang Lin for repair, Jiang Chen then found Lin Ling.

"Although our technology is a bit backward, there are still things like atomic bombs."

"Really? The speed of the tech tree is unexpectedly fast, has it entered the atomic age? Lin Ling brushed off her long silver-white hair and sat on the office chair, "And then?" What are you doing with this thing in my lab? ”

"I want to ask, how many nuclear bombs can be built with these more than 500 kilograms of uranium?"

Hearing Jiang Chen's words, Lin Ling was slightly stunned, pinched her chin and thought for a moment before replying.

"Nuclear bombs? It depends on the type. It's just uranium-235, which can only be used to make the most primitive kind of fission bomb. In addition, the abundance of uranium-235 must be considered, assuming that this batch of material can purify 100 kilograms of enriched uranium. With pre-war technology, almost 12 nuclear bombs with a yield of 10,000 tons of TNT could be built. At the beginning of the atomic age, 50 kilograms of enriched uranium could almost have 1 kilogram of a chain reaction, and about 2 pieces could be made. ”

"That's right." Jiang Chen nodded thoughtfully.

"Are you going to ask me to help you build a nuclear bomb?"

"If you have this plan, can you do it?"

The tactical nuclear bombs seized from the sixth block have all been used on the W-1 ballistic missiles deployed in various corners of Qingpu. In resource-poor wastelands, these remnants of nuclear weapons are used in a fraction of what is needed.

"A hundred puddings, lemon-flavored!" Lin Ling said unceremoniously.

"Deal." Jiang Chen said happily.

It's really cheap.

I was very surprised to hear Jiang Chen's promise. Lin Ling didn't show a happy expression as usual, but glanced at Jiang Chen meaningfully.

"I have to say more, this thing is poison."

Hearing this, Jiang Chen was stunned, and then fell into silence.

After a moment, he spoke.

"I'll use it sparingly."

"Hmm. That's good. Lin Ling nodded, a smile appeared on her porcelain doll-like face, "If I can, I want to continue to eat the pudding you brought." ”

The unnatural light passed over the eaves of the window, and for some reason, it made the beautiful smile stained with a poignant feeling.

Speaking of which, the world was destroyed by nuclear weapons.

Delicately looking away, Jiang Chen took out the black suitcase from the storage space, and said without saying from the previous topic.

"Can you show me this?"

"What is this thing?" looked at the suitcase that Jiang Chen put on the table. Lin Ling had an interested expression on her face.

"The Axis submarine of the Axis powers, which I found on a U-boat in World War II, is a special antique."

"Oh? Second world war? That's really a distant story," Lin Ling took the suitcase, her electronic eyes shrank slightly, carefully examined its surface textures, and asked casually, "What's so special?" ”

"It excites Crainn particle waves."

"It can't be." Lin Ling categorically vetoed and casually opened the four-dimensional communication device on the table. "How can people in the atomic age be aware of the existence of the Craint particle if they can't even observe dimensions?"

However, as soon as she was halfway through these words, Lin Ling's voice froze.

There is no sound, just four letters.

【Help】

"This, this can't wait. It's just a half-finished product. No, even if it is a semi-finished product, it is absolutely impossible to do it with the level of science and technology in the atomic age. Lin Ling's eyes widened and she said in disbelief.

Looking at Lin Ling's surprised look, a touch of confusion appeared on Jiang Chen's face.

"Semi-finished products? Can you explain? ”

Heard Jiang Chen's inquiry. Lin Ling glanced at Jiang Chen.

"If you think about it, when you are using a four-dimensional transmitter to communicate with me, will the signal strength change with the change of position?"

"Probably not."

"Herein lies the problem." Lin Ling's finger clicked on the suitcase, "The signal strength of the Crainn particle wave propagating in the four dimensions will not be attenuated with the change of three-dimensional coordinates. Rather, it doesn't have the physical properties of energy and speed at all, and it's just a wave that exists conceptually. It's as simple as receiving a specific signal at a specific point in time. ”

"Can I receive it anywhere in the universe?" Jiang Chen couldn't help but be moved.

That's right, that's why it's also called the interstellar geocommunication particle. After all, if you use electromagnetic waves to communicate, there will be a delay of 1 second from the Earth to the Moon, and it will take more than half a year to reach the Oort Cloud, the boundary of the solar system. It is not limited by three-dimensional at all, as long as the coordinates of the same time are broadcast, any corner of the universe can receive the signal. But even before the war, this kind of thing was considered 'cutting-edge science', and even I could only transmit information in a resonant way between two homologous subcrystals. Lin Ling said.

It's really amazing, compared to electromagnetic waves, electromagnetic waves are more like flying pigeons.

"Then why does the signal from this thing decay with distance?" Jiang Chen asked in confusion.

"So it's a half-finished product. In other words, the maker didn't understand the principle of this thing at all, and just made a similar thing according to a drawing or something. ”

Lin Ling sighed, paused, and gave a fairly popular example.

"It's as if I had a cell phone in my hand, and I handed him to the primitive man and told him to use this thing to call me. But he'd never seen anything like this, and he'd always used the way of flying pigeons to pass on books, and he didn't know what a phone call was. So he used a stupid method, which was to use a knife to engrave words on the phone case. Then the phone was strapped to the pigeon's foot and mailed to me. ”

Jiang Chen couldn't help but have a smile on his face, but immediately, his face showed a touch of abruptness.

"Could it be a message from the future, sending the drawings of the four-dimensional communication device to the past? Someone built a communication device out of a gourd, but didn't know how to 'make a call', so he emitted electromagnetic waves. In three dimensions, the signal of the Crainn particle wave is broadcast. ”

"It's possible." Lin Ling did not deny Jiang Chendi's opinion, "Let's assume that the image you showed me last time is the mature Crainn particle communication technology. The hello that symbolizes friendship is the greeting of the 'future people' to the 'primitive people' on your side. While saying hello, I brought you some kind of cutting-edge technology. Among those technologies is the manufacturing process of Craint particle communication devices. ”

"Those black technologies?"

Thinking of the black technology that the Third Reich came up with in World War II, Jiang Chen couldn't help but have a strange expression on his face.

"That's right." Lin Ling nodded, "Do you remember what I told you last time?" Some people, under the strong influence of this special wave, will translate these signals into video information in the form of dreams. But. All these specially structured brains can do is passively receive information. It's like talking to a dumb person on the phone, you can't know if the other person is listening to you. If you want to make sure that someone in the past has received that message, all you need to do is send them the 'talk' method along with the coordinates. ”

"Is this line of 'Help' heard by future people?"

"Apparently not." Lin Ling sighed and reached out to turn off the four-dimensional communication device, "That person obviously overestimated the comprehension ability of primitive people. No matter how strong the carrier pigeon. It is also impossible to leap the distance of time. ”

It seems that until its demise, the Third Reich had not been able to get in touch with that voice from the future.

Jiang Chen didn't speak. Just quietly looking at the suitcase, thinking about something.

"Can I open this box?" Lin Ling pointed to the suitcase.

"Of course, but I haven't found the key to open the box, and I'm not sure if there's a booby in the box." Jiang Chen shrugged.

"This is very easy to do," Lin Ling raised a haughty smile at the corner of her mouth, and placed the box on her experimental equipment. "I'm not stupid enough to be plotted by the traps of primitives."

However, the chest did not have a booby and was easily opened.

A black metal ball slightly larger than a baseball, and a notebook.

"This is" Jiang Chen picked up the black ball and carefully observed its surface.

There are no cracks on the surface, and it doesn't look like it can be opened. In an inconspicuous place. Jiang Chen found a neat line of small characters.

"German?"

Jiang Chen made a mistake this time, he could only speak a foreign language.

"Use this." Lin Ling threw a translucent graphene card into Jiang Chen's hand, "As long as the handwriting is not particularly sloppy, it can be easily translated into any commonly used language." ”

"Damn, it's just a hoist!" Jiang Chen was shocked.

Looking at Jiang Chen's shocked appearance, the corners of Lin Ling's mouth raised a touch of pride.

She just appreciates his performance of this kind of "dirt bun". This made her feel like God, and she only needed to "give alms" at will to be worshiped by "believers".

Although this thing can't be regarded as her doing, it's just that the waste pickup team picked up the garbage, and she repaired it.

Usually this kind of thing is thrown into the refining furnace to recover useful materials, after all, the end times don't need translation. The reason why this thing was repaired was mainly due to Yao Yao's request, after all, Lin Ling, who was a cyborg, didn't need this kind of thing.

"Golden apples?" Pasting the translation card on the line of small characters, Jiang Chen read it out in a low voice.

It's a pure black metal ball, but it's called a golden apple?

"Give me that to study and study, and you can just read that notebook." Lin Ling took the golden apple from Jiang Chen's hand and couldn't wait to walk towards an experimental instrument.

She couldn't wait, Jiang Chen didn't understand.

This feeling is probably equivalent to finding a big brother in the ancient tomb of the Han Dynasty.

Jiang Chen picked up the note and opened its title page.

This is a diary.

Perhaps, the secret is hidden in this diary. (To be continued......)