In classical mechanics, particles follow well-defined trajectories. In quantum mechanics, particles do not have a well-defined trajectory; instead, they exist as probability waves that describe the likelihood of finding the particle at a certain point in space.

The conflict between quantum mechanics and classical mechanics arises because the two theories make different predictions about the behavior of particles. In classical mechanics, particles follow well-defined trajectories. In quantum mechanics, particles do not have a well-defined trajectory; instead, they exist as probability waves that describe the likelihood of finding the particle at a certain point in space.

The conflict between quantum mechanics and classical mechanics is often referred to as the quantum mechanical paradox.

## Other related questions:

### Q: What is the relation between quantum mechanics and classical mechanics?

A: Quantum mechanics is a branch of physics that studies the behavior of matter and energy in the presence of an observer. Classical mechanics, on the other hand, is a branch of physics that studies the behavior of matter and energy in the absence of an observer.

### Q: Why is the conflict between relativity and quantum mechanics?

A: There is no conflict between relativity and quantum mechanics.

### Q: What is difference between quantum mechanics and classical mechanics?

A: Quantum mechanics is the branch of physics that studies the behavior of matter and energy in the presence of an observer. It is the foundation of modern physics and the theory of the wave-particle duality.

Classical mechanics is the branch of physics that studies the behavior of matter and energy in the absence of an observer. It is the foundation of Newtonian physics and the theory of the mechanical laws of motion.

### Q: What is the difference between classical theory and quantum theory?

A: Quantum theory is a more recent theory that explains the behavior of particles on a subatomic level, while classical theory focuses on explaining the behavior of larger objects. Classical theory is based on the concepts of Newtonian physics, while quantum theory uses the principles of quantum mechanics.