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  1. Quantum mechanics - Wikipedia

    Measurements of quantum systems show characteristics of both particles and waves (wave–particle duality), and there are limits to how accurately the value of a physical quantity …

  2. What Is Quantum Physics? - Caltech Science Exchange

    Quantum physics is the study of matter and energy at the most fundamental level. It aims to uncover the properties and behaviors of the very building blocks of nature.

  3. What is Quantum Physics? A Beginner’s Guide

    Apr 28, 2025 · Quantum physics is a revolution not just in science but in our very conception of what is real. It shows that the universe is far stranger, more beautiful, and more interconnected …

  4. Quantum mechanics | Definition, Development, & Equations

    Oct 7, 2025 · Quantum mechanics, science dealing with the behavior of matter and light on the atomic and subatomic scale. It attempts to describe and account for the properties of …

  5. Part 1: Basic Concepts | Quantum Physics I - MIT OpenCourseWare

    Lecture 2: Overview of quantum mechanics (cont.). Interaction-free measurements. More on superposition. General state of a photon and spin states (17:10) Lecture 3: Photoelectric …

  6. Quantum Mechanics | Principles, Applications & Theory

    May 27, 2024 · Quantum mechanics stands as one of the most intriguing and fundamental branches of physics, delving into the behavior of particles at the atomic and subatomic levels. …

  7. What is quantum theory? | Definition from TechTarget

    Dec 23, 2024 · Quantum theory, or quantum mechanics, is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the subatomic level.

  8. Quantum mechanics can be thought of roughly as the study of physics on very small length scales, although there are also certain macroscopic systems it directly applies to. The …

  9. Introduction to quantum mechanics - Wikipedia

    Quantum mechanics is the study of matter and matter's interactions with energy on the scale of atomic and subatomic particles. By contrast, classical physics explains matter and energy only …

  10. The Basics of Quantum Physics - sciencenewstoday.org

    Jul 26, 2025 · As quantum theory advanced, physicists began to see particles not as tiny billiard balls, but as excitations in quantum fields. Every type of particle—electron, quark, photon—is a …