Chapter 680

As soon as his voice fell,

Xu mang quietly opened his animal mode. The former king speed reappeared in the public's view, which was so fast that he was shocked by his hand speed. At this moment, all people can only see the shadow of Xu Mang's waving arm.

This... What is this doing?

Are you crazy?

In a flash... The hall was like boiling water, boiling directly. All the people on the scene screamed. Their eyes were full of panic. Their expression was a little unbelievable and even confused.

How fast!

Is that the speed of miracles?

Not yet fully reflected, people saw that Xu mang was about to finish writing the last blackboard. Finally, in a corner at the bottom, he wrote a numerical value - 0.833, with the unit of feimi.

“？？？”

“？？？”

“？？？”

Many people are surprised by this figure, especially the researcher of Jefferson Laboratory of the Ministry of energy of the people's Republic of China. They are full of astonishment at the radius value calculated by Xu Mang, which is totally different from the value measured by the accelerator.

"It's over

"In my case... The final value of the proton radius is 0.833 flying meters." Xu mang put down his pen and looked back at Henry Millan. He said calmly, "Professor Henry... I don't know if my calculation result is consistent with your measurement result."

At this time,

the researchers studying the proton radius did not speak. They looked at the number on the blackboard and felt unprecedented fear for a moment. Why was it 0.833? Is it possible that Professor Xu mang made a mistake?

Obviously,

the values measured by the accelerator in Jefferson Laboratory of the Ministry of energy of the people's Republic of China are totally different from those obtained by Xu mang with pure mathematics. Many people present have seen this point, but why not speak out loud?

Finally,

the middle-aged man said, "Professor Xu, are you wrong? This is not the same as what we measured. We used the cebaf accelerator to measure the proton radius, and the value was 0.84184 F.M

"Wrong?"

"It should not be possible." Xu shook his head and said seriously: "I also want to make a mistake, but it's very difficult... Anyway, my result is 0.833 flying meters. No matter how many you are, it has nothing to do with me. Of course... According to history, the mystery of proton radius will only become smaller and smaller, and finally reach my value."

Although 0.84184 and 0.833 look similar, they are actually quite poor. The researchers at Jefferson Laboratory of the Ministry of energy are at a loss. They lost the smile on their faces. They were supposed to laugh at them, but they couldn't laugh at all.

How does this...

get the value?

Are we wrong?

An absurd idea appeared in the mind of every researcher in Jefferson laboratory. Indeed, as Xu mang said, the radius of proton was shrinking, from 0.8768 to 0.84184, and then to the latest 0.833.

Historical footprints tell others that 0.833 will become the proton radius value for a period of time, but it is definitely not the final number.

Damn it!

How on earth is this done?!

"No, no, no!"

"I absolutely don't believe it's true." An extremist researcher called out to Xu Mang: "it must be your calculation error. We used the latest 'PR' experiment to get the proton radius. You... You rely on limited data, and then use pure mathematical methods to calculate it. How can it be possible?"

For a while,

the whole audience was a little uproar, and gradually many people began to question Xu Mang's correctness. They needed an explanation, a convincing explanation.

Unfortunately,

Xu did not give an explanation.

"Cut!"

"Then you should study hard and try to reach the value of 0.833." Xu mang twisted his neck and said calmly, "it's almost over... Dinner is over, and the problem has been solved for you. It's time to say goodbye."

"Goodbye!"

As a result,

Xu mang left here directly, followed by the Chinese delegation.

"No way!"

"It's absolutely impossible!" The extremist researcher stood in front of Xu Mang's blackboard, staring at the above paragraph of the formula, his pupil narrowed slightly, and his mouth kept repeating his previous words.

Impossible,

absolutely impossible!

For this researcher, he couldn't accept the fact at hand. After all, the content presented on the blackboard overturned his original concept of physics and, by the way, overturned his own research achievements in this field.

At this time,Henry Millan quickly found the head of Jefferson laboratory, the middle-aged man who provided Xu with the question.

"Is the figure calculated by Xu mang correct?" Henry Millan asked, "are you wrong, or is he wrong in calculation?"

"I don't know..."

"I don't really want to admit... But I feel..." the middle-aged man stares at the blackboard with a somewhat complicated expression and says, "Professor Henry... I need to take a new measurement with my team."

"Good!"

In a word,

Henry Millan also looked at the blackboard. The damned content on the blackboard made him doubt the world. He even felt that he had been abandoned by mathematics. This paragraph of calculation is very obscure, let alone how the answer came out... Even the process can not be seen clearly.

Fortunately,

there are no reporters on the scene, otherwise... Today will be the most humiliating day in American Physics.

At the same time,

"Professor Xu?"

"Is your calculation correct?" Xiao Han asked curiously, "seriously... We can't even understand what you are doing. It's really relying on pure mathematics to solve an unsolved mystery in the field of physics?"

"Er..."

"almost." After thinking for a moment, Xu mang said with a smile, "but we don't have to worry about it. The United States will try to solve this problem, but the final figure must be 0.833 flying meters."

"How on earth did this come out?" Another woman with glasses asked, "now we are very confused. We don't know what happened. We just watch you in front of the blackboard and write a lot of formulas. Finally, we get a number."

Xu mang shrugged his shoulders and said helplessly, "then we can understand mathematics well."

"..."

"..."

"

"... "

oh my God!

Who doesn't want to figure it out? But even if I understand, I don't think it's half the height of Professor Xu.

"Ah?"

"No

"Professor Xu... We seem to have suffered a great loss!" A young man frowned and said with displeasure, "if they take your calculation as their own, it's not a big loss? It's clearly your credit. "

"I have no interest at all about the radius of the proton. How much does it love?" Xu mang shrugged his shoulders and calmly responded, "whatever they want... Finish the last thing tomorrow. We'll go back the day after tomorrow. I'll book you all first class tickets."

Sleeping trough!

I'm so happy. When I go out with Professor Xu, I can not only see the rising knowledge of the world, but also get a free first-class ticket.

The United States of America flies to China,

is very expensive!

...

in fact, Xu mang was completely right. In the evening of that day, all the researchers of Jefferson laboratory returned to their work places. By the way, he called some people back from home to the conference room at 10:00 p.m. to discuss and revise the following experimental scheme.

At first,

in the PR experiment, the experimenter emits a beam of electrons to the hydrogen molecule, and measures how some electrons move in the direction of deflection, and then extrapolates the experimental data to a lower electron energy to determine the proton radius.

But it means that some theoretical assumptions must be made that may distort the final result, and maybe that's where the problem lies.

The theoretical hypothesis is wrong...

finally,

after many researchers in Jefferson laboratory thought hard, they decided to inject hydrogen directly into the vacuum tube to pass through the electron beam, instead of keeping the hydrogen molecule in the metal container like many previous experiments.

This means that no electrons will strike the metal and interfere with the measurement results, and how the electron beam scatters both protons and electrons in the hydrogen atom is measured.

The resolution of these two types of scattering is entirely to eliminate a major error source.

The density of hydrogen atom fluctuates.

"Cough!"

"We fought all night, we had a rest in the morning, and in the afternoon, we had a new experiment."

However,

no one wants to go to bed,

everyone is looking forward to the results of the experiment, whether the final number is 0.833 flying meters.

Unfortunately,

the new experiment was carried out all night without rest. However, according to previous experience, the experiment took about three hours from the beginning to the completion, or even more than three hours.

"Say..."

"what do you think is the final result?" A researcher asked his colleagues nearby: "it's also... Am I asking for nothing? You just came in the morning. ""What happened yesterday? I find that a lot of people are not in the right state The confused researcher asked anxiously, "it seems that Professor Xu has put forward a new concept?"

New concept?

He directly overturned the results of other people's research.

"Alas..."

"it's hard to say. In a word, Professor Xu mang overturned our test data." The researcher said bitterly: "he only relied on the information we provided, and then used pure mathematical calculation to draw the conclusion that the proton radius is 0.833 flying meters."

"Ah?"

"Is this... Are you telling a story?"

"The story... If all this is a story, that would be great..." the researcher sighed and said helplessly, "I have a bad feeling... Maybe the new PR experiment, the measurement result may be... 0.833."

This is not an empty statement.

theoretical physicists are good at discovering and proving the truth of all things by using numbers, formulas, ideas and logic in the tip of his pen. As a famous theoretical physicist in the world, Professor Xu mang has this strength.

......

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