Quantum physics is the branch of physics that deals with the behavior of matter and energy at the smallest scales, such as atoms and elementary particles. Describe the fundamental properties of particles, waves, and interactions in the quantum realm. In contrast to classical physics, which follows deterministic laws, quantum physics introduces uncertainty and stochastic behavior. Key principles of quantum physics include superposition, entanglement and wave-particle duality. Quantum mechanics has profound implications for our understanding of the universe, including quantum computing, quantum cryptography, and the interpretation of reality at the quantum level. It is a complex and fascinating area that continues to challenge our conventional notions of the nature of reality and existence.