According to the Copenhagen interpretation of quantum mechanics, the act of measurement or observation plays a fundamental role in determining the state of a quantum system. This interpretation suggests that until a measurement is made, a quantum object can exist in a superposition of multiple states, meaning it can be in multiple states simultaneously. However, when a measurement is performed, the superposition collapses, and the object is observed to be in a particular state.
It is important to note that the Copenhagen interpretation does not imply that objects or things cease to exist when they are not observed. Rather, it suggests that the properties of quantum systems are inherently probabilistic and that their behavior is best described in terms of mathematical probabilities. When a measurement is made, the probabilities associated with the different states collapse into a single observed outcome.
In other words, objects and things in the quantum realm do not disappear when they are not observed. Instead, their behavior is described by a wave function, which encompasses all possible states, and the act of observation collapses the wave function to a specific state. The Copenhagen interpretation does not make any claims about the existence of objects in the absence of observation. It primarily addresses the nature of the measurement process and the role of observation in determining the outcomes of quantum systems.