What is the definition of the term "quantum mechanics" and how does it relate to the study of physics?

Quantum mechanics is a branch of physics that studies the behavior and properties of matter and energy at a microscopic level. It deals with phenomena that are not explained by classical mechanics, such as the wave-particle duality, where matter acts as both a wave and a particle.

In quantum mechanics, particles are described by wave functions, which provide information about the probability of the particle's properties. This concept is known as wave-particle duality, enabling quantum mechanics to predict the behavior of particles and systems, such as electrons and atoms.

Quantum mechanics has vast applications in many fields, including material science, nanotechnology, and electronics. In addition, it has implications for understanding the universe, including cosmology and black holes.