What are the main differences between classical and quantum physics?

Classical physics is a branch of physics that deals with the motion of macroscopic objects that can be observed with the naked eye, while quantum physics is a branch of physics that deals with the behavior of matter and energy at the atomic and subatomic level.

The main differences between classical and quantum physics include:

• Object size: Classical physics deals with macroscopic objects, while quantum physics deals with microscopic objects.
• Measurement: In classical physics, a measurement does not change the system being observed, while in quantum physics, a measurement generally changes the state of the system being observed.
• Probabilistic nature: Quantum mechanics is inherently probabilistic, while classical mechanics is deterministic.
• Complementarity: In quantum physics, there is a principle of complementarity, which states that some properties of a particle cannot be observed simultaneously.