Schrödinger's Cat

In 1935, Austrian physicist Erwin Schrödinger devised this thought experiment to illustrate the absurdity of applying the **Copenhagen interpretation** of quantum mechanics to macroscopic objects. He proposed a scenario involving a hypothetical cat that is simultaneously both **alive and dead**, due to its fate being linked to a random subatomic event.

The Setup

• A sealed steel chamber containing a cat, a vial of poison, a Geiger counter, and a radioactive source.
• If a single atom decays within one hour, the Geiger counter triggers a hammer, breaking the vial, and releasing the poison.
• The quantum state of the atom (decayed or not decayed) determines the classical state of the cat (dead or alive).

The Implication

According to the quantum rules applied literally, until an external observer opens the box, the cat's wave function exists in a superposition of two states: **50% Alive + 50% Dead**. The experiment served as a brilliant critique, forcing physicists to consider where the boundary between the quantum and classical worlds actually lies.