Distinguish, differentiate, compare and explain what is the main difference between Classical Mechanics and Quantum Mechanics.

## Difference between Classical Mechanics and Quantum Mechanics

1. Classical Mechanics deals with macroscopic particles whereas Quantum Mechanics deals with microscopic particles.

2. Classical Mechanics is based upon Newton’s laws of motion. Quantum Mechanics takes into account of Heisenberg’s uncertainty principle and de Broglie concept of dual nature of matter (particle nature and wave nature).

3. Classical Mechanics is based on Maxwell’s electromagnetic wave theory according to which any amount of energy may be emitted or absorbed continuously. Quantum Mechanics is based on Planck’s quantum theory according to which only discrete values of energy are emitted or absorbed.

4. In Classical Mechanics, the state of a system is defined by specifying all the forces acting on the particles as well as their positions and velocities (moment). The future state then can be predicted with certainty. Quantum Mechanics gives probabilities of finding the particles at various locations in space.

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