1900: A physics genius wandering around Europe

Chapter 122 Explanation : Everyone’s inherent time!

When faced with the twin paradox, Einstein was confident.

The calculation formula appeared on the screen while his commentary appeared on the field.

"Since the elder sister is in a non-inertial reference frame and the younger sister is in an inertial reference frame, the comparison of time is meaningless."

"Because any formula of relativity is based on an inertial reference system."

"So, we only need to select the result of one reference system. The other reference system has no effect."

"Here, we use my sister on Earth as the reference frame for explanation."

"Suppose your sister takes a spaceship to a planet A 250 million light years away, and then returns to Earth from there at the same speed."

“Then the whole process will be divided into four stages.”

"The first stage is: the spacecraft starts from the earth, accelerates until it approaches the speed of light, and then starts to run at a constant speed."

"The second stage is: when the spacecraft is about to reach Planet A, it needs to slow down until its speed is zero, and then land on Planet A."

"The third stage is: the spacecraft departs from Planet A, accelerates first until it approaches the speed of light, and then begins to run at a constant speed."

"The fourth stage is: when the spacecraft is about to reach the earth, it needs to slow down until its speed is zero, and then land on the earth."

"For the convenience of calculation, we regard acceleration and deceleration as uniform changes."

“And the third and fourth stages are the same as the first and second stages, just in the opposite direction.”

"Attention, the key to this question lies in the process of [acceleration] and [deceleration]. Please listen carefully."

"According to the LQW transformation, the acceleration also satisfies the transformation formula."

"Calculations show that in my sister's eyes, the acceleration will gradually decrease, so no matter how the spacecraft accelerates, it will never exceed the speed of light."

"Similarly, the parameter of time also follows the LQW transformation."

"The changes in the time of the elder sister and the younger sister can be used to calculate their respective [proper time]."

"Let me explain here that proper time is the time that one feels."

"Because the time felt by the elder sister is different from the time felt by the younger sister."

"Let T represent the proper time of the younger sister, and t represent the proper time of the older sister."

"Then after the LQW transformation, we can get a relationship formula about T and t."

"Since we are using the younger sister as the reference frame, the older sister flew from Earth to Planet A, 250 million light years away."

"Then my sister's proper time T is approximately equal to the time required by light, 250 million years."

"So, substituting this into the formula, my sister's proper time is t = 57 years."

"That is to say, it only took my sister 57 years to fly a distance of 250 million light years."

"So when she returned to Earth, she found that her sister had passed away, and even the entire human civilization had ended."

"Because the Earth has undergone tremendous changes over the past 500 million years."

At this point, everyone in the venue gasped.

Everyone was shocked by Einstein's calculation results.

what's the situation?
Only more than 100 years have passed for my sister, but 500 million years have passed for the Earth?

This is simply a fantasy.

Doesn't that mean that the elder sister is indeed younger than the younger sister, and 500 million years younger!

The calculation of that inherent time is exquisite yet extremely complicated.

All the sense of disharmony is calculated through it.

Einstein looked at everyone's surprised expressions and felt a sense of pride.

His theory of relativity was indeed a groundbreaking theory. Just a formula was enough to make countless people unable to understand it.

So, he continued to explain: "I know everyone will have doubts. A distance of 250 million light years means that even light needs 250 million years to travel."

"Why did it only take my sister 57 years?"

“In fact, this is a relative question.”

"Light takes 250 million light years, which is the time seen by humans on Earth."

"But the time it takes for light to pass is probably just a split second."

"If one could see the universe from the perspective of light, then the moment light is emitted, it has already reached from one end of the universe to the other."

"So, from the perspective of the younger sister on Earth, it really took the older sister 250 million years to reach Planet A."

"But from my sister's perspective, due to time dilation, only 57 years had passed and she had traveled 250 million light years."

At this moment, countless people in the venue were completely confused.

They really couldn't accept such a weird conclusion.

Professor Case even immediately asked back: "Einstein, but you just said that in the eyes of the elder sister, the younger sister's time will also slow down."

Einstein smiled and said, "Yes, but as I explained, if my sister never returns to Earth."

"Then the speed of the elder sister's time has nothing to do with the younger sister."

"The elder sister feels younger than the younger sister, and the younger sister can also feel younger than the elder sister."

"The two do not affect each other." "They just need to be responsible for their own inherent time."

"It's like there's an alien somewhere far away, flying at nearly the speed of light, so his time has nothing to do with ours."

"But if he suddenly decides to come to Earth, then perhaps millions of years have passed before he arrives here."

"But from the aliens' perspective, only 30 years have passed."

"Because we are in different reference frames, the comparison of time is meaningless."

"You can simply understand that the elder sister and the younger sister are in two independent and different time and space!"

boom!
The venue was thrown into complete madness.

Everyone was confused by Einstein.

Only those above the level of ordinary physicists can understand it.

When they saw such a horrifying result, their three views were shattered.

It is really based on the results of the theory of relativity, and the facts are so astonishing.

If a person can reach a speed infinitely close to the speed of light, doesn't it mean that while 100 million years have passed in the outside world, the time that has passed for him may only be a few years?

What’s even more terrifying is that a moment of light is humanity’s eternity.

The moment light appears, the perceived passage of time, and for humans, the universe ends.

In other words, if a person really moves at 100% of the speed of light, the universe will end in an instant.

Such an incredible yet logical inference made everyone's brain crash and they didn't know what to do.

Senior physicists frowned, as they had to admit that there was no problem with the inferences of the theory of relativity.

Einstein's calculations were impeccable, and if relativity was correct, this would be the result.

Everything, in the final analysis, comes down to the concept of "relativity".

This word seems to have infinite magic, making all kinds of incredible phenomena become reality.

At this point, Einstein added: “In fact, for a better understanding, we can put aside the complicated calculations and use a space-time diagram to explain it.”

As he spoke, he drew a schematic diagram on the projector.

"This time we analyze it from the sister's reference frame and we can see that the results are the same, and the sister's time is still slower."

"So the so-called twin paradox is a false proposition."

"The result is fixed. When the spacecraft flies out and comes back, the people on it are younger than those on Earth."

When Einstein finally finished speaking, Lorentz didn't know how to conduct the meeting.

Because as a senior physicist, he was also shocked and speechless at this moment.

He swore that the formulas on the screen were the most outrageous formulas he had ever seen in his life.

It directly smashed Newton's mechanical system to pieces.

This bizarre conclusion made him doubt that the theory of relativity was simply nonsense.

But his intuition told him that the theory of relativity was most likely correct.

This contradictory and torn feeling made Lorenz realize for the first time that knowing too much is not a good thing.

The more I know, the more insignificant I feel.

I might as well learn from that boy named Chris, who had a clear stupidity on his face and looked very happy.

That's right, for Chris, the meeting had already taken a turn for the worse.

It's simply the Olympian gods playing a physics game, which mortals cannot observe at all.

Even if you occasionally catch a glimpse of a few words, you cannot understand the profound meaning contained in them.

Like Chris, other students and non-physics majors were completely excluded from the meeting.

In fact, if they are given some time to think carefully, they should be able to understand it.

But now Einstein is tearing up the formula on the spot. Without a certain level of talent, it is impossible to keep up with the thinking of the great god.

Only the top ones can truly understand.

But their hearts were still filled with huge waves, and they were shocked beyond words.

The theory of relativity really goes beyond human common sense and thinking.

This theory, which can only be imagined in the mind, has a huge impact on reality.

The more outrageous the theory of relativity is, the more they feel it is wrong and that such a theory should not exist in the world.

How wonderful it is to have a uniform view of space and time.

Li Qiwei smiled at this moment. No wonder the theory of relativity caused a wave of opposition when it was first published.

No wonder the Physics Nobel Committee does not dare to award the prize.

Such an incredible theory cannot be verified through experiments, and no one dares to easily say that it is correct.

Looking at Einstein's high-spirited appearance on the stage, Li Qiwei thought to himself: The photoelectric effect is written off.

At this time, Lorenz finally calmed down and said professionally: "Does anyone have any other questions? Please continue to ask."

No one dared to respond
(End of this chapter)