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- Quantum physics (also known as quantum theory or quantum mechanics) is a branch of physics providing a description of the behaviour and interaction of matter and energy on the scale of subatomic particles, photons and certain materials at very low temperature.
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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. While many quantum experiments examine very small objects, such as electrons and photons, quantum phenomena are all around us, acting on every scale.
- What Does Quantum Mean?
- Who Developed Quantum Mechanics?
- What's Special About Quantum Physics?
- What Is Quantum Entanglement?
- Quantum Optics
- Quantum Electrodynamics
- Unified Field Theory
- Other Names For Quantum Physics
- Major Findings, Experiments, and Basic Explanations
"Quantum" comes from the Latin meaning "how much." It refers to the discrete units of matter and energy that are predicted by and observed in quantum physics. Even space and time, which appear to be extremely continuous, have the smallest possible values.
As scientists gained the technology to measure with greater precision, strange phenomena was observed. The birth of quantum physics is attributed to Max Planck's 1900 paper on blackbody radiation. Development of the field was done by Max Planck, Albert Einstein, Niels Bohr, Richard Feynman, Werner Heisenberg, Erwin Schroedinger, and other luminary ...
In the realm of quantum physics, observing something actually influences the physical processes taking place. Light waves act like particles and particles act like waves (called wave particle duality). Matter can go from one spot to another without moving through the intervening space (called quantum tunnelling). Information moves instantly across ...
One of the key concepts is quantum entanglement, which describes a situation where multiple particles are associated in such a way that measuring the quantum state of one particle also places constraints on the measurements of the other particles. This is best exemplified by the EPR Paradox. Though originally a thought experiment, this has now been...
Quantum opticsis a branch of quantum physics that focuses primarily on the behavior of light, or photons. At the level of quantum optics, the behavior of individual photons has a bearing on the outcoming light, as opposed to classical optics, which was developed by Sir Isaac Newton. Lasers are one application that has come out of the study of quant...
Quantum electrodynamics (QED) is the study of how electrons and photons interact. It was developed in the late 1940s by Richard Feynman, Julian Schwinger, Sinitro Tomonage, and others. The predictions of QED regarding the scattering of photons and electrons are accurate to eleven decimal places.
Unified field theory is a collection of research paths that are trying to reconcile quantum physics with Einstein's theory of general relativity, often by trying to consolidate the fundamental forces of physics. Some types of unified theories include (with some overlap): 1. Quantum Gravity 2. Loop Quantum Gravity 3. String Theory / Superstring Theo...
Quantum physics is sometimes called quantum mechanics or quantum field theory. It also has various subfields, as discussed above, which are sometimes used interchangeably with quantum physics, though quantum physics is actually the broader term for all of these disciplines.
Earliest Findings 1. Black Body Radiation 2. Photoelectric Effect Wave-Particle Duality 1. Young's Double Slit Experiment 2. De Broglie Hypothesis The Compton Effect Heisenberg Uncertainty Principle Causality in Quantum Physics - Thought Experiments and Interpretations 1. The Copenhagen Interpretation 2. Schrodinger's Cat 3. EPR Paradox 4. The Many...
- Andrew Zimmerman Jones
Mar 23, 2024 · Quantum mechanics is a theory that deals with the most fundamental bits of matter, energy and light and the ways they interact with each other to make up the world. This landmark theory originated in the early 20th century and is finding many real-world applications in the 21st century.
Jan 4, 2023 · Last Updated: January 4, 2023 Fact Checked. Quantum physics (also known as quantum theory or quantum mechanics) is a branch of physics providing a description of the behaviour and interaction of matter and energy on the scale of subatomic particles, photons and certain materials at very low temperature.
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Jun 13, 2022 · Quantum physics is the study of things that are very, very small. This branch of science investigates the behavior of matter and the activities happening inside of atoms in...
Quantum physics is a branch of physics that works with the activities going on inside of atoms. They talk about subatomic particles interacting with each other. We're starting to talk about Albert Einstein and Max Planck's ideas here. In the early 1900's, scientists were beginning to examine the inside of atoms.
Feb 20, 2022 · 29.1: Quantization of Energy. Energy is quantized in some systems, meaning that the system can have only certain energies and not a continuum of energies, unlike the classical case. This would be like having only certain speeds at which a car can travel because its kinetic energy can have only certain values.
