What is the Schrödinger's theory?

Schrödinger's cat is a thought experiment in quantum mechanics that physicist Erwin Schrödinger devised in 1935 to illustrate his issues with the Copenhagen interpretation of quantum mechanics. The experiment involves a cat, a radioactive source, and a flask of poison in a sealed box. If the radiation monitor detects radioactivity, it shatters the flask, releasing the poison and killing the cat. The Copenhagen interpretation implies that the cat is simultaneously alive and dead before the box is opened, but when it's opened, the cat will be found either alive or dead. This poses the question of when quantum superposition ends and reality resolves into one possibility or the other.

The experiment has implications for the role that consciousness might play in quantum physics. It suggests that there is no definitive reality before measurement, and that an object is in an undefined state known as a superposition.