What exactly Cai Ding e s cat is talking about

That's Schrödinger's cat. This is an interesting thought experiment proposed by Schrödinger to illustrate the properties of quantum physics.

Specifically, if there is a cat and a bottle of poison gas in a sealed box, the gas bottle will be released due to the decay of the atoms of a certain element, and once the poison gas is released, the cat will be poisoned. But we don't know if the atoms in the sealed box decayed, because according to quantum physics, the half-life of an element is fixed, but the specific time of decay is random, and the state of each atom is a superposition of the decayed state and the non-decayed state.

Therefore, for those of us outside the box, the cat can be said to be both alive and dead, both alive and dead, and the cat's state of existence is or superimposed on the dead. This is an example of how extremely microscopic quantum physics affects the real life of extremely macroscopic people, and it can be seen that some ideas of quantum physics can affect our understanding of even the most ordinary things around us.

Hope I've made it clear, hehe

"Cai Ding'e's cat" is an Internet buzzword, derived from a meme of Cai Xukun. It refers to Cai Xukun's once acted in a TV series "I Won't Be Bullied by Girls", in the play, the character played by Cai Xukun is called "Cai Ding'e", and this character is characterized by wearing a pair of glasses. And "Cai Ding'e's cat" describes Cai Xukun's image when he performs this role, like a cat with a pair of glasses.

This stalk has also become one of Cai Xukun's synonyms, and is often used by fans and netizens to describe Cai Xukun or things related to him.

Answer addendum: To put it simply, if you don't lift the lid, you still don't know the result, and you have to open the cup to determine the winner. (It's like a gambling god...)

A cat is placed in an opaque box, which is then connected to an experimental setup containing a radioactive nucleus and a container containing toxic gases. Imagine that this radioactive nucleus has a 50% chance of decaying within an hour. If decay occurs, it will emit a particle, which will trigger the experimental device to open the container containing the poisonous gas, killing the cat.

Expansion: 1. Introduction:

Quantum mechanics is a sub-discipline of physics that studies the motion laws of microscopic particles. It provides a mathematical description of the "like-particle" and "like-wave" duality of particles (i.e., "wave-particle duality") and the interaction between energy and matter. The main differences between it and classical mechanics are:

It studies the "quantum realm" of atoms and subatoms. Further research in quantum mechanics is the phenomenon of macroscopic matter at very low or very high energies or temperatures.

2. Overview. Quantum mechanics is a physical theory that describes microscopic matter, and together with the theory of relativity, it is considered to be the two fundamental pillars of modern physics, and many physical theories and sciences such as atomic physics, solid state physics, nuclear physics, and particle physics, as well as other related disciplines, are based on quantum mechanics. At the end of the 19th century, the shortcomings of classical mechanics and classical electrodynamics in describing microscopic systems became increasingly apparent.

Quantum mechanics was founded at the beginning of the 20th century by a large number of physicists such as Planck, Niels Bohr, Werner Heisenberg, Schrödinger, Wolfgang Pauli, de Broglie, Max Born, Enrico Femi, and Paul Dirac. Through the development of quantum mechanics, people's understanding of the structure of matter and its interactions has been revolutionized. It is through quantum mechanics that many phenomena are truly explained, and new, inintuitively imagined phenomena are predicted, but these phenomena can be calculated precisely by quantum mechanics, and later very accurately experimentally proven.

With the exception of gravity, which is described by the general theory of relativity, all other fundamental physical interactions that have been described so far can be described within the framework of quantum mechanics (quantum field theory).

The basic principles of quantum mechanics include the concept of quantum states, the equations of motion, theoretical concepts, and the corresponding rules and physical principles between observed physical quantities.

In quantum mechanics, the state of a physical system is represented by the wave function, and the arbitrary linear superposition of the wave function still represents one of the possible states of the system. The change of state over time follows a linear differential equation that predicts the behavior of a system, and the physical quantities are represented by operators that represent certain operations that meet certain conditions; The operation of measuring a physical quantity of a physical system in a certain state corresponds to the effect of the operator representing that quantity on its wave function; The possible value of the measurement is determined by the eigenequation of the operator, and the expected value of the measurement is calculated by an integral equation containing the operator.

The modulus square of the wave function represents the probability density of the occurrence of a physical quantity as its variable. Based on these basic principles and accompanied by other necessary assumptions, quantum mechanics can explain various phenomena of atoms and subatoms.

Does Cai Dingye also have a cat? Is it the same breed as the Schrödinger's?