According to the theory of quantum mechanics, cats should be in the superposition state of dead cats and live cats because radioactive radium is in the superposition state of decay and non-decay. This dead and alive cat is the so-called "Schrodinger cat". But a cat can't exist both dead and alive, and the result must be found out after unpacking. This experiment tries to explain the principle of quantum superposition on the micro scale from the macro scale, and skillfully links the existing form of microscopic matter after observation with the macro cat, thus verifying the existing form of quantum when it comes to observation. With the development of quantum physics, Schrodinger's cat has also extended physical problems and philosophical disputes such as parallel universe.
According to classical physics, one of these two results must happen in a box, and external observers can only know the result inside if they open the box. In the quantum world, when the box is closed, the whole system maintains an uncertain wave state, that is, the superposition of cat life and cat death. Whether the cat is dead or alive can only be determined when the box is opened for external observers to observe and the matter is expressed in the form of particles. The purpose of this experiment is to show the extraordinary knowledge and understanding of quantum mechanics on the world of microscopic particles, but this makes the microscopic uncertainty principle become the macroscopic uncertainty principle, the objective law is not transferred by human will, and the life and death of cats violate logical thinking.
The thought experiment tells us that nothing is certain unless we observe it, but it turns the microscopic uncertainty principle into the macroscopic uncertainty principle, the objective law is independent of human will, and the cat's life and death violate the logical thinking. Einstein and a few non-mainstream physicists refused to accept the theoretical results founded by Bohr and his colleagues. Quantum mechanics tells us that there is an intermediate state in which cats are neither dead nor alive until we observe and see what will happen. Einstein believes that quantum mechanics is only a reasonable description of the behavior of atoms and subatomic particles. This is a phenomenological theory, not the ultimate truth in itself. He has a famous saying, "God can't roll dice." He does not recognize Schrodinger's cat's non-eigenstate theory, and thinks that there must be an internal mechanism that constitutes the true nature of things. Einstein spent years trying to design an experiment to test whether this inner truth was really effective, but he died before he finished the design.