Classical objects appear to have definite properties because their properties are averaged over a large number of underlying quantum particles. In other words, the behavior of classical objects can be described by statistical mechanics, which is a branch of classical physics that uses probability distributions to describe the behavior of large groups of particles.

At the quantum level, however, individual particles do not have definite properties in the same way that classical objects do. The properties of quantum particles, such as position and momentum, are described by wave functions that represent a probability distribution of all the possible states that the particle could be in. When a measurement is made, the wave function collapses to a specific state, and the particle takes on a definite value for the measured property. But until a measurement is made, the particle does not have a definite value for that property.

This is one of the key differences between classical and quantum mechanics: in classical mechanics, objects have definite properties that can be measured independently of each other, whereas in quantum mechanics, particles can be in a state of superposition where they have multiple possible values for a given property, and the properties of entangled particles are correlated in ways that cannot be explained by classical mechanics.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence