Shadow of great britain

Arthur looked at Faraday standing in front of him, feeling his kind and gentle attitude and his familiar face.

Arthur was silent for a while, and suddenly felt that it might be better to see him in the textbook.

Even though Arthur thinks his physics is pretty good, his memory is also in the relatively good range.

But, what if, if he remembers the theorem wrongly, will he still be infamy for thousands of years?

Seeing that Arthur had not spoken for a long time, Faraday thought that his sudden arrival had attracted too much attention from the audience, thus frightening the science-loving Scotland Yard police officer.

In the Royal Society, Faraday often came into contact with scientists who did not like to attract attention.

Therefore, he took it for granted that Arthur was one of their kind.

Faraday bowed embarrassedly and apologized: "Mr. Officer, I didn't mean to interrupt the discussion between you and your friend.

But I think the memory method you just mentioned seems to be really suitable to help students who are new to the field of electricity.

If you are embarrassed to share it in public, we can wait until the lecture is over to talk slowly. "

Faraday had just finished speaking, but Arthur had not yet answered. Elder, who was sitting aside, was not happy.

The boy noticed that the eyes of all the ladies in the room were focused on the three of them. Elder, whose hormones were soaring to the limit, stood up and spoke to Faraday.

"Mr. Faraday, this friend of mine is shy by nature and is not good at talking. If you have any questions, just ask me."

Seeing that Elder was actually willing to volunteer, Faraday happily held his hand: "So, may I ask you, what exactly happened to that right hand just now?"

"This is simple. This... right hand... is... right hand... alas..."

Perhaps he stood up so violently that the blood oxygen supply in Elder's body couldn't keep up, and his mind went blank. He couldn't even utter a complete sentence, let alone repeating the knowledge Arthur had said.

Young Master Elder hesitated for a long time, and for some reason suddenly an idea came to his mind.

He grabbed Faraday's right hand and brought it to his eyes, studied it carefully for a long time, and then slowly spoke.

"Uh... Mr. Faraday, the wisdom thread on your right hand..."

As soon as Elder said this, bursts of laughter erupted in the venue, and the air was filled with a cheerful atmosphere.

The reserved ladies picked up fans and covered their mouths with their eyes narrowed in laughter.

As for the men, they were not so particular. They were laughing so hard that they were out of breath, holding their stomachs and unable to straighten up.

The gentleman who graduated from Cambridge and sat behind Arthur was laughing and slapping the back of the chair, shouting intermittently.

"No...that's right. They...their Oxford education is like this."

Seeing this, Arthur couldn't help but cover his face with one hand: "Elder, if you don't know, you don't know. Why are you trying?"

Elder's face turned pale, and he felt guilty and sweated on his forehead. He cursed in a low voice: "Arthur, Arthur! You should fucking save me!"

Things have reached this point, and Arthur can't come out even if he doesn't want to.

He stood up and explained: "Mr. Faraday, I..."

Faraday was also a little overwhelmed by Elder's funny performance. When he saw Arthur standing up, his first reaction was to hesitate and ask: "Are you going to help me again?" Line of fate, right?”

Before Arthur could speak, Elder, who was eager to get rid of the embarrassment, rushed to speak again: "Mr. Faraday, you don't need to bother Arthur with such a small matter. I have already read it all for you, and your fate line is also very good."

Now, the laughter in the venue could be used for a concert.

When Arthur, who had always been good-tempered, finally couldn't help but glare at Elder, he whispered at him.

"What's the business of you here? Why don't you shut up!"

Elder quickly stopped talking. He also knew that if he said a few more words, his reputation in the Royal Society lecture venue would be completely ruined from now on.

Arthur took a deep breath and quickly adjusted his emotions.

He said: "Mr. Faraday, my right hand is what I use to determine the direction of electricity. Of course, you used a coil in your second experiment, so you can also use it..."

When Faraday heard this, he nodded repeatedly and said: "Yes, the coil can be judged by Ampere's rule, that is, the right-hand spiral rule. But the right-hand rule you just mentioned seems to be different from the right-handed spiral rule."

When Arthur heard this, although his face still maintained the inherent calmness and calmness of a Scotland Yard policeman, the red devil beside him had begun to laugh uncontrollably.

"Arthur, what's the matter with you? Look at your neck, you're sweating. Don't you know the right-hand spiral rule? It was proposed by the Frenchman Andre Ampere in 1820. If you don't Yes, I can teach you. The price for a soul is fair and cheap."

But although Agares saw Arthur sweating, he obviously guessed what Arthur was thinking wrong. It was not that Arthur didn't know the right-hand spiral rule, but what surprised him was-Ampere had actually proposed it?

Arthur thought about it for a moment and said cautiously: "I was also inspired by Ampere's rule, so I came up with the method of using my left and right hands to make judgments.

The way to judge the right hand rule is to make the thumb and the other four fingers perpendicular and on the same plane as the palm.

At this time, put your right hand into the magnetic field, let the magnetic field lines pass vertically through the palm of your hand, and point your thumb in the direction of the conductor's movement. Then the direction pointed by the other four fingers is the direction of the induced current. "

When Faraday heard this, he immediately stretched out his fingers and gestured to himself. After a while, his frown suddenly relaxed.

He smiled happily and said, "That's really true!"

As soon as Faraday said this, the laughter of the gentlemen and ladies present gradually faded away, and they all stretched out their right hands to gesture to each other.

Not long after, an uproar was heard in the venue.

"What a genius summary."

"As Mr. Faraday said, this is really suitable for beginners to memorize."

"Mr. Police Officer, what about the left-hand rule?"

Faraday heard that the audience had begun to ask questions for him, so he didn't say anything and just looked at Arthur with a smile.

Arthur also understood the meaning in Faraday's eyes. He stretched out his left hand to demonstrate: "The left hand rule is roughly used in the same way as the right hand. The difference is that it is used to judge power, not current. .

Ladies and gentlemen, please stretch out your left hand and make your thumb perpendicular to the other four fingers. Let the magnetic field lines flow in from the palm of your hand. If the four fingers point in the direction of the current, then what your thumb points to is the Ampere force, which is the force exerted by the current-carrying wire in the magnetic field. direction.

If the moving charge is positive, the direction of the thumb can also be expressed as the direction of the Lorentz force. If the charge is negative, the opposite direction of the thumb pointing is the direction of the Lorentz force. "

After Arthur finished speaking, he breathed a sigh of relief.

It didn't matter to him whether he remembered it right or wrong. Anyway, if a master scientist like Faraday found out that he was wrong, he would definitely correct it. In order to help Elder escape, today he was willing to risk everything.

Just when he was about to sit down, Arthur suddenly found that the atmosphere in the venue was not quite right.

The gentlemen and ladies present neither took out their hands to gesture like before, nor laughed loudly, but looked at him blankly one by one.

Just when Monk Arthur was confused, Faraday spoke.

He asked Arthur with an apologetic look on his face: "Please forgive me for being ignorant. Can I take the liberty of asking you, what is the Lorentz Force?"

When Arthur heard this, his pupils shrank, and he said to himself: "It's bad, something big has happened."