There is also a strange person in the refresher class, known as a physics maniac, who said on the first day of class that his childhood dream was to be a scientist and physicist. Later, due to family reasons, he had to change his original intention, and now he has developed into a businessman, which he is deeply saddened by. At every chance he could, he began to talk about Hertz installations, double-slit interference fringes, so that the audience scattered and fled, and he felt the heat of the world. Fortunately, he soon discovered that he also had a loyal and beautiful listener, who was elegant, intelligent, and empathetic, and could be called an interpretive flower.

"Do you know wave-particle duality?" The physics maniac, with a hairstyle comparable to that of Albert Einstein, pushed the glasses on the bridge of his nose and asked.

"I learned it in middle school textbooks." Bai Zezhi nodded and said.

"Don't you think it's strange?" The physics maniac asked again.

"Huh? What's strange? Bai Zezhi was puzzled.

"Don't you think it's strange? Have you never wondered when the teacher was teaching? How can an electron be both a particle and a wave? It's like a fruit, how can it be both an apple and a banana? It's like a person, how can he be both a man and a woman? The physics maniac's eyes lit up and he asked.

Bai Zezhi was a little stupid: "That's what the textbook says, who would think about that?" ”

"So, only a very small number of people can really think, and only a very few people are lucky enough to peek into the secrets of nature. Particle or wave? To live or to perish? This question has been debated for three hundred years. When it passes through the double slit at the same time with a wave doppelganger, we see the interference fringes. When we want to install a monitoring device on the double slit and test whether it passes through the left or right slit, it becomes a dot on the screen to show us the state of its particles. What it is depends on how you observe it. It's everything, it's nothing. ”

Ding Shuguang's face was calm, he quietly sorted out his things, prepared to leave, and gave Bai Zezhi a look from time to time. Bai Zezhi is not good to turn his head and walk away like this, and this physics maniac is so talking, he is so angry, it is difficult to insert a sentence into it.

"Do you think there must be a definite, objective existence? No, when we want to observe it, our subjective and external universe become one, and the state of the observed object has changed. ”

Bai Zezhi said confusedly: "This feels as if it has become a philosophical question, which reminds me of idealism......"

"Yes," the physics madman was in high spirits, feeling that he had met a soulmate, "Quantum physics is a very metaphysical thing, and there is no absolute objective world!" Of course, we don't have to worry about a soccer ball suddenly changing direction at the moment of shooting, because Planck's constant is so tiny for a soccer ball, so tiny that it is negligible, whereas for an electron, human observation is enough to affect its activity......"

When Gu Youli arrived, the physics maniac was still talking, and his interest did not diminish in the slightest. When Bai Zezhi said goodbye and left, he was still a little reluctant. After going out, Gu Youli asked dissatisfiedly, "Who is that nerd?" ”

Ding Shuguang said: "Everyone calls him a physics maniac, and his dream is to be a physicist, not a businessman of all evils." Speaking of which, it's a bit of a sympathy with me. ”

"He's funny, humorous, and talented." Bai Zezhi said.

"Cut! Can you be more talented than me? Gu Youli showed his disdain very hard.

Bai Zezhi looked at him and asked, "How did you find here?" ”

...