Schrödinger's cat

Schrödinger's cat

Schrödinger's cat is a thought experiment in quantum mechanics, proposed by Austrian physicist Erwin Schrödinger in 1935. The experiment involves a hypothetical cat that is placed in a sealed box with a radioactive substance, a Geiger counter, and a small amount of poison. The Geiger counter is connected to a device that releases the poison if it detects a radioactive decay.

According to quantum mechanics, the radioactive substance is in a superposition of both decaying and not decaying until the box is opened and the state of the substance is observed. This means that until the box is opened, the cat is both alive and dead, existing in a state of quantum superposition.

The thought experiment was proposed to highlight the strange and counterintuitive nature of quantum mechanics, where particles can exist in multiple states simultaneously until they are observed. Schrödinger's cat is often used as an analogy to explain the concept of superposition and the role of observation in quantum mechanics.