Arthur looked at Faraday, who was standing right in front of him, feeling the kind and gentle attitude of the other party, and the familiar face.

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

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

But what if, if he remembers the theorem wrong, then he must not be left with a stench for 10,000 years?

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

At the Royal Society, Faraday was often exposed to scientists who did not like to be high-profile.

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

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

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

If you're too embarrassed to share in public, we can wait until the lecture is over. ”

As soon as Faraday finished speaking, Arthur had not answered, and Elder who was sitting next to him was not happy.

The kid found that the eyes of the ladies in the audience were focused on the three of them, and Elder with hormones soaring to the limit snapped to his feet and said to Faraday.

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

Faraday saw that Elder was willing to volunteer, and happily shook his hand: "So, may I ask you, what exactly happened to that right hand just now?" ”

"It's simple. This one...... Right hand...... It is...... Right hand...... Alas......"

Perhaps he stood up so violently that the blood supply in Elder couldn't keep up, and his mind was blank, let alone repeating what Arthur had said, he couldn't even say a complete sentence.

Young Master Elder was spitting for a long time, and somehow a flash of inspiration suddenly occurred in 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 line of wisdom on your right hand ......"

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

The reserved ladies took up their fans and put them to their mouths, their eyes narrowing into a line with a smile.

As for the men, they are not so particular, they laugh breathlessly, and they can't stand up straight one by one holding their stomachs.

And the Cambridge graduate who sat behind Arthur laughed and slapped the back of his chair, and he shouted intermittently.

"I didn't ...... That's right. They...... Their Oxford education is like this. ”

Seeing this, Arthur couldn't help but cover his face with one hand: "Elder Elder doesn't know if you don't know, what can you do?" ”

Elder turned pale, his heart was sweaty, and he scolded in a low voice: "Arthur, Arthur! You're fucking saving me! ”

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

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

Faraday was also a little overwhelmed by the antics that Elder made, and when he saw Arthur standing up, his first reaction was to hesitantly ask, "Do you want to help me see the line of fate again?" ”

Before Arthur could speak, Held, who was anxious to get rid of the embarrassment, hurriedly spoke: "Mr. Faraday, there is no need to trouble Arthur for this kind of trivial matter, I have already read it all for you, and your fate line is also very good." ”

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

When Arthur, who had always been good-natured, heard this, he finally couldn't help glaring at Elder and muttering to him.

"What's the matter with you here? Shut up yet! ”

Elder hurriedly stopped, he also knew that if he said two more words, his reputation in the Royal Society lecture hall would be completely ruined from now on.

Arthur took a deep breath and quickly adjusted his mood.

He spoke, "Mr. Faraday, my right hand is what I use to determine the direction of electricity. Of course, you used coils in your second experiment, so you can use ...... as well."

When Faraday heard this, he nodded again and again: "That's right, the coil can be judged by Ampere's rule, that is, the right-hand spiral rule." But the right-hand rule you just talked about seems to be different from the right-hand spiral rule. ”

When Arthur heard this, although his face still maintained the inherent calmness and calmness of the Scottish Yard police, the Red Devil beside him had begun to laugh uncontrollably.

"Arthur, what's the matter with you? You look at your neck, the sweat is coming down. Don't you know the right-hand spiral rule? It was proposed by the Frenchman André Ampère in 1820. If you don't know, I can teach you. A soul, fair and cheap. ”

But although Agareth saw Arthur sweating, he obviously guessed Arthur's idea wrong, Arthur didn't know how to use the right-handed spiral rule, but what surprised him was that Ampere had actually proposed it?

Arthur pondered for a moment and said cautiously: "I was also inspired by Ampere's law, so I came up with a method of judging with my left and right hands.

The right-hand rule is determined so that the thumb is perpendicular to the other four fingers, and all of them are on the same plane as the palm.

At this time, put the right hand into the magnetic field, let the magnetic inductance line pass perpendicular through the palm of the hand, and the thumb points in the direction of the conductor's movement, then the direction of the other four fingers is the direction of the induced current. ”

When Faraday heard this, he immediately stretched out his finger and gestured to himself, and after a while, his frowning brow suddenly relaxed.

He smiled happily: "It's really like this!" ”

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

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

"What a genius summing up."

"It's like Mr. Faraday said, it's really good for beginners to memorize."

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

Faraday heard that the audience had begun to help him ask, so he didn't speak, but looked at Arthur with a smile.

Arthur also understood the meaning in Faraday's eyes, and he stretched out his left hand and demonstrated: "The rule of the left hand is used in much the same way as the right hand, except that it is used to judge force, not electricity.

Ladies and gentlemen, please stretch out your left hand so that your thumb is perpendicular to the other four fingers, so that the magnetic inductance lines flow in from the palm of your hand, and the four fingers point in the direction of the current, then the thumb points to the ampere force, that is, the direction of force on the energized wire in the magnetic field.

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

Arthur breathed a sigh of relief after saying this.

It doesn't matter if he's right or wrong, anyway, if a master scientist like Faraday finds out that he is wrong, he will definitely correct it, and in order to help Eld get out, he is out of the way today.

Just as he was about to sit down, Arthur suddenly noticed that the atmosphere in the room was not quite right.

The gentlemen and ladies present neither took out their hands to gesture nor laughed as they had just done, but looked at him one by one in a daze.

Just as Arthur was confused, Faraday spoke.

With an apologetic face, he asked Arthur, "I beg my pardon for being so unheard, can I take the liberty of asking you, what is Lorentz Force?" ”

When Arthur heard this, his pupils shrank, and he secretly said in his heart: "It's broken, something is wrong." ”