The Copenhagen interpretation is a well-known interpretation of quantum mechanics, which was proposed by Niels Bohr and Werner Heisenberg in the 1920s. The Copenhagen interpretation is the most widely accepted interpretation of quantum mechanics and is still used today to describe the behavior of subatomic particles.
According to the Copenhagen interpretation, quantum mechanics describes the behavior of subatomic particles in terms of probabilities. In other words, it is impossible to predict with certainty the outcome of any given experiment, but only the probability of various outcomes. The act of observation by a conscious observer collapses the wave function, which describes the probability of a particle's location or properties, causing the particle to assume a definite state.
The Copenhagen interpretation also includes the concept of complementarity, which states that certain physical properties of particles, such as position and momentum, cannot be measured simultaneously with high precision. This idea is based on the Heisenberg uncertainty principle, which states that the more precisely the position of a particle is known, the less precisely its momentum can be known, and vice versa.
Overall, the Copenhagen interpretation is a fundamental part of our understanding of quantum mechanics and provides a useful framework for explaining the behavior of subatomic particles.