Chapter 2996 The ghost in the distance (1)

There are many types of glasses, but generally speaking, young people use more myopia glasses, which are a kind of concave mirror, while the elderly have more presbyopia and use convex lenses.

In Gloucester's era, people had already discovered that convex lenses could magnify things. In addition, at his age, the glasses he used were presbyopic glasses. It was not until 1289 that the earliest myopia glasses appeared in Florence. At that time, he Been dead for 30 years.

The old monk had no children or relatives to inherit his "property", and although he left mainly documents, these manuscripts were "divided up", some were taken away by the university, some by the church, and some It fell into the hands of a private collector.

Among them was a Baron named Roger Bacon, who studied art at Oxford University in 1247, and later transferred to cosmic science. data of. If light is a substance, no matter how "simple" its composition is, as the light path lengthens, it must also multiply.

Newton was a supporter of the theory of light particles. He believed that light is a flow of particles, starting from a light source, moving in a straight line at a uniform speed in a homogeneous medium following the laws of mechanics. Newton's law of gravitation holds that the speed of gravitational propagation is infinite. No matter how far the objects are or the type of medium in between, the gravitational force can be felt immediately. The special theory of relativity holds that the fastest information transmission in the universe is the speed of light... …

Simply put, Newton defines time as absolute, special relativity believes that space-time is variable and flat, general relativity thinks that space-time is curved, and it is the "medium" that causes the contradiction between classical physics and relativity. There are many particles in the universe that we cannot see, they fill the universe like invisible light, the sky appears black to human eyes, but if people can see the radiation in the microwave band, they will find that the sky in all directions is uniform Glowing.

If light is a kind of wave, then it must be transmitted by a medium like sound waves and water waves. This substance was once called "ether", and Einstein had quantum mechanics, and the theory of absolute time was also abandoned.

Not only did Grindelwald give a lecture in Paris in 1929 that nearly destroyed Paris, Hubble also discovered the expansion of the universe... Anyway, when Pomona found Albus, he was reading books like this.

Kids love watching Superman save the "multiverse crisis." What is the multiverse?

The "parallel world" in most novels means that a and b are married in this world, and they are not married in another world.

In the multiverse assumed by Feynman, a and b are married no matter what, but a and b may get married three years after graduation, there is no twists and turns in the middle, everything goes smoothly, and in another hypothesis, the two They worked in different places for a period of time, and one of them almost fell in love with another person. After experiencing many setbacks and trials in the middle, they finally got a "happy reunion". They got married three years after graduation. If the pair of young people are imagined as particles, the particles have gone through all the distances in the light cone, that is, there are countless possibilities, and this is also a kind of multiverse. The straight line is of course the fastest, but they just have to go around the corners.

In theory, quantum entanglement does not have time difference and medium, but it is difficult to verify due to the limitation of experimental precision and ability, so it can only stay in theory, and Einstein does not support the existence of quantum entanglement in theory.

Many things are beyond the scope of human perception, and if you deny their existence without seeing them, and understand them in a way that humans understand, then the earth is still flat, because gravity is also invisible.

"You seem to be in a lot of distress." Dumbledore said suddenly.

Pomona looked at him and found that he was still looking down with his half-moon glasses.

"Severus hoped that I would not intervene in the dispute between the students, but there were students watching." Pomona said gloomily.

"So what's bothering you?" Dumbledore asked.

It was this that made her anxious, and she could not describe it.

"I have a friend who told me a story." Dumbledore flipped a page of the book lightly.

"You want to tell me a bedtime story?" Pomona said wryly.

"Grandpa White Beard" laughed, and then said, "A long time ago, there was a two-headed bird living under the snow-capped mountains, one named Garucha and the other named Upagarucha. When one end is sleeping, the other end must be awake and looking around. One day the two-headed bird was resting on a fruit tree, Upagarucha fell asleep in the gentle breeze, and a fruit hit Garucha on the head The scent of the wild fruit made Garucha salivate, he thought 'I ate this fruit myself, and it got into my stomach, and Upagarucha also gained strength', so he ate that fruit, Upagaruka Rucha hiccupped after waking up, and asked suspiciously, "Where did I get such a delicious food, eating it made me full of energy", and then Upagarucha said angrily, "I came across a good thing, but Garucha was alone. Enjoy, and I will not do that in the future'. After a while, they encountered a fruit tree whose fruit was poisonous. Guo ate it, and when Garucha woke up, he felt uncomfortable, and hiccupped involuntarily, realizing that there was poisonous gas, but it was too late to wake up his companions, and the two birds died of hatred."

After a moment Dumbledore looked up at Pomona "Do you know what the problem is?"

"Upgarucha didn't eat good food and then held a grudge," Pomona said.

"There is no exact answer to this question. Just like the rune snakes, they are always arguing. If they don't learn to choke, won't there be fights?" Dumbledore asked.

Pomona didn't know how to answer.

"Knowing how to weigh the important and not being impulsive is the manifestation of a mature mind. If I were you, Professor, I wouldn't worry about it. You have made a judgment based on your reason and wisdom, so why bother?"

"He thought I was biased," Pomona said.

Dumbledore didn't want to continue talking, but he was still patient.

"Our heart is like a paintbrush, which can paint all kinds of things in the world. It can paint whatever materials you give it. You should think about how to resolve disputes and misunderstandings, instead of being influenced by others."

Pomona felt that she was still in the fog, but Dumbledore wanted to read quietly and would not give her any other answers.

So she bowed and left the principal's office.

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"Do you think Albus ever met Einstein?"

Pomona asked while doing the dishes.

Severus, who was wiping the dishes with a rag, froze.

"Why do you feel that way?" Severus asked.

"Because he's 'old,'" Pomona said. "They're a generation."

"One of them lives in Germany and the other lives in England." He put a wiped bowl back on the dish rack.

"But Albus has been to Berlin," said Pomona.

"Einstein was no longer in Germany by then," Severus said.

"You just don't think they've seen it anyway, do you?" Pomona asked.

"Yes." He made a hissing sound, prolonging the end of his voice on purpose.

"Can't they communicate?" Pomona asked.

Now he didn't answer.

Pomona handed him the clean dishes.

"How about we go to Muggle World tomorrow, I haven't seen a movie in a long time."

"I'll go if I win the chess game." He said coldly.

Pomona pouted, "You know I can't beat you."

"Then don't even think about it." He said with a smile in a good mood.

"Why can't you make me happy just once?" Pomona grumbled, leaving the kitchen.

Sometimes she really hopes to have a "normal" boyfriend, not to mention that the movie she wants to watch is a sci-fi movie that boys like to watch instead of a romantic literary movie.

"What movie?" Severus asked from the kitchen.

"The Matrix!" Pomona said angrily, crumpling up the movie poster and throwing it into the trash can.

Incidentally, quantum entanglement has been demonstrated