It's reasonable for me to have a two-way foil for a second-level civilization, right?

"At present, the space starship factory has successfully produced the first planetary starship."

"Although it is only a small engineering ship and does not carry too many advanced weapon modules, its comprehensive performance has far exceeded the scope of the original satellite-class starship."

"For a planetary starship equipped with a new generation of curvature engines, the curvature navigation speed has been increased to 30c, which is still far from the theoretical upper limit of 50c."

"However, these ceilings are just a bunch of useless numbers for us today."

"Due to the obstacles of communication technology, the speed of the starship can only be maintained at 10c and below."

"Communication technology has become the biggest shortcoming that hinders the strength of the fleet!"

Lu Yongchang's voice echoed in the command center.

The expressions on the faces of the academicians of the Academy of Sciences gradually became serious.

Everyone is aware of this problem, but...

"Yongchang, do you think, besides quantum long-distance communication, is there any communication method that can exceed the speed of light?"

Fang Xu sighed softly, and said with some confusion: "Academician Mo Zeyang has been working hard on the improvement of quantum communication technology."

"He also reported to me the progress of the work, but...we didn't find a way to circumvent the [event form] theory."

Lu Yongchang chuckled and waved his hand lightly.

"Quantum communication is definitely not going to work."

"We need to forge a new path."

As he spoke, he raised his right hand to operate in the azure blue holographic projection beside him.

A line of bright white text slowly emerged from the projection.

【Taxion Communication Technology】

After a brief silence, low and dense discussions came from all directions in the command center.

……

two days ago.

Lu Yongchang is sitting in his office, which is one of the few areas covered by artificial gravity in the [Earth].

He stretched his body, lay back on the office chair, and let out a long breath.

A brand new star system, which means a lot of complicated chores.

Fortunately, with everyone's efforts, these trivial matters were resolved one by one, and the human fleet gradually got on the right track of development.

With a slight smile on his lips, he slowly closed his eyes.

With a slight movement of consciousness, he sank into the technology tree system in his mind.

The background of the mottled technology tree, as always, exudes a mysterious atmosphere, constantly attracting his attention.

With a clear purpose, Lu Yongchang did not pay too much attention to this weird background, and directly focused on the bright white technology tree floating in the air.

Since entering the era of technology explosion, the technology tree of the fifth-level civilization has been lit up a lot.

His eyes skipped those bright cursors, and extended directly to the extremely dim font.

【Taxion Communication Technology】

chopsticks?

Countless information about Tachyon suddenly appeared in Lu Yongchang's mind.

Does this thing really exist?

At the same time, deep confusion appeared in his mind.

But soon, he put these doubts behind him - the technology marked on the technology tree, so far, has not had any errors.

He began to focus his attention.

Inspiration also sprung up in his mind like mushrooms after rain.

……

"chopsticks?"

Not far away, Mo Zeyang frowned slightly, muttering in a low voice: "Does this thing... really exist?"

Since the age of the earth, tachyon, a subatomic particle, has always existed in the conjectures of human scientists.

(Subatomic particles, also known as subatomic particles, refer to particles whose structure is smaller than atoms, such as electrons, protons, neutrons, etc.)

In theoretical speculation, the speed of tachyons is infinite and far exceeds the speed of light.

Therefore, in a sense, it can achieve real long-distance communication!

No matter where you are in the universe, tachyons can arrive in an instant!

but……

"Up to now, tachyons still only exist in the mathematical system, and we have never observed evidence of the existence of tachyons." Fang Xu said in a deep voice.

"Yes." Lu Yongchang nodded slightly.

"The observation of tachyons, or in other words, the observation of faster-than-light objects, is far beyond our previous technical level."

Lu Yongchang's words touched the heartstrings of many academicians.

"I understand! I understand!"

"You mean..." Tao Yuda suddenly realized, with a little excitement in his eyes, "To observe tachyons, we must sit on a curvature spacecraft?!"

With a smile in his eyes, Lu Yongchang nodded with satisfaction.

"Correct."

"If you compare the universe to an ocean."

"The speed of light is an insurmountable watershed, which is the sea."

"Below the speed of light is sea water, which is also our visible universe. Protons, neutrons, electrons... these sub-light speed particles can never exceed the speed of light under normal circumstances."

"And those tachyons, like tachyons, they can never go slower than the speed of light."

"Their location is the sky above the sea."

"That creates a phenomenon."

"We who live in the sublight universe can never spy on the phenomena that happen in the superlight universe!"

"Unless we break free from the shackles of the sea and rush to the sky!"

"The curvature engine has brought us a breakthrough!"

"I guess, when our sailing speed exceeds the speed of light, some of the same experiments may lead to some additional discoveries!"

ps: Thank you Shui Mozi for his certification.

Addition progress: 6/12

It's over, more and more!send!

Chapter 668 Imaginary Numbers Are Not Imaginary: Imaginary Quality

"I know that this kind of groundless speculation does not play any substantive role in scientific research."

As he spoke, Lu Yongchang chuckled lightly.

"But that's your guess!" An academician shouted loudly, "For so long, Professor Lu, your guess has never been falsified!"

Lu Yongchang curled his lips, and said half-jokingly: "Then what if I made a mistake this time?"

"Then..." The academician who spoke scratched his head, and an awkward smile suddenly appeared on his face.

There was also a slight, good-natured laugh in the command center.

"Okay, let's get down to business." Lu Yongchang stretched out his hand and dragged a holographic projection, and wrote on it, "There is no evidence for empty words. Next, I will briefly explain to you the reason for making this judgment."

After the voice fell, the originally relaxed atmosphere in the command center suddenly became dignified.

Every academician widened his eyes, fearing that he might miss even one punctuation step.

After all, everyone knows that Professor Lu's deduction steps are exceptional.

A trance time, maybe some important information was missed.

"First of all, according to the special theory of relativity, objects with mass cannot exceed the speed of light, just like protons and electrons, their speed can only be infinitely close to the speed of light."

"So, for tachyons, we need to introduce a concept."

"Virtual mass."

"A long time ago, during the research of quantum physics, we came to a conclusion."

"Imaginary numbers are not imaginary. Imaginary numbers that have meaning in mathematics also have corresponding meanings in reality."

While speaking, Lu Yongchang quickly wrote and scratched something on the holographic projection.

"According to the derivation steps here, we can extrapolate the concept of imaginary numbers."

"This extends the concept of imaginary mass."

"And the mass of tachyons is an imaginary mass."

"That's why it can get rid of the shackles of special relativity and become a tachyon."

As Lu Yongchang's words echoed in everyone's ears, there were more and more complex and cumbersome formulas in the holographic projection.

"Conjectures about the nature of tachyons are also based on the concept of virtual mass."

"Unlike ordinary particles, tachyons travel far faster than the speed of light from the moment they appear."

"Its speed will increase infinitely with the dissipation of energy, which is different from the particles we usually recognize."

"When its energy is exhausted and tends to zero, its speed will tend to infinity."

"Therefore, if we want to observe tachyons, we must slow down their speed, which means that we need to input a lot of energy into them."

"But even so, its speed will not be lower than the speed of light. Only by sailing with curvature can we get the opportunity to observe it."

On the side, Tao Yuda murmured thoughtfully: "Then if tachyons really exist, we can draw a simple conclusion."

"What?" Lu Yongchang heard Tao Yuda's muttering, he turned his head and cast a questioning look at Tao Yuda.

Tao Yuda was silent for a while, and said firmly: "Our universe is composed of virtual and real parts. The real universe is the visible universe within the speed of light, and the virtual universe is the invisible universe above the speed of light!"

Hearing this, Lu Yongchang also fell into deep thought.

After a long time, he hesitated and nodded, affirming Tao Yuda's statement: "This conclusion can indeed be drawn."

Lu Yongchang's words caused quite a stir in the command center.

A number of academicians of related majors began to discuss.

"No, that's not right!"

Fang Xu's voice overwhelmed all the subtle discussions: "Professor, Taezi has a big problem!"

"Our karma has been reversed!"

……

Within the cone of light, everything is destiny.

The appearance of Tachyon seems to have broken this proposition.

"I understand what you mean."

Lu Yongchang said softly: "For the visible universe, the appearance of tachyons seems to mean that it is possible to reverse time, and the causal relationship will also be reversed."

"But the universe is fair."

"According to the current deduction, we can only discover tachyons and receive information transmitted by tachyons in the state of faster-than-light travel."

"In other words, only when we transcend the light cone can we obtain information beyond the light cone."

"Cause and effect have not been reversed."

"But... what if?" Fang Xu said with an ugly face, "What if Tachyon breaks through this limit and affects the visible universe?"

"If time can be reversed and cause and effect can be reversed, it means that our physical system has a huge problem to some extent!"

"This will be an incomparably huge blow to the science of human civilization!"