Question

Define Quantum mechanics. Explain it correctly

Answer 1

Explanation:

The word quantum derives from the Latin, meaning "how great" or "how much". ... The discovery that particles are discrete packets of energy with wave-like properties led to the branch of physics dealing with atomic and subatomic systems which is today called quantum mechanics.

Answer 2

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Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science.