What is the Copenhagen interpretation of quantum mechanics?

The Copenhagen interpretation of quantum mechanics is a prominent and enduring concept within the field of physics that deals with the nature of measurement and observation in the quantum world. This interpretation stems from the early days of quantum theory, pioneered by physicists such as Niels Bohr and Werner Heisenberg.

One of the key aspects of the Copenhagen interpretation is the idea of wave-particle duality, which suggests that particles like electrons can exhibit both wave-like and particle-like properties depending on how they are observed or measured.

Central to the Copenhagen interpretation is Heisenberg's uncertainty principle, which states that there is a fundamental limit to the precision with which certain pairs of properties, such as position and momentum, can be simultaneously known.

This interpretation emphasizes the role of the observer in shaping reality in the quantum realm, suggesting that the act of measurement or observation influences the outcome of an experiment. It highlights the inherently probabilistic nature of quantum mechanics, challenging classical notions of determinism.

Overall, the Copenhagen interpretation remains a cornerstone of quantum theory, sparking much debate and discussion among physicists and philosophers alike.