Quantum mechanics is a fundamental physical theory that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels and is the underlying framework of many fields of physics and chemistry, including condensed matter physics, quantum chemistry, and particle physics. Along with general relativity, it is one of the pillars of modern physics. Quantum mechanics - Introduction. The term quantum (Latin, "how much") refers to the discrete units that the theory assign ...

Including:

• Quantum mechanics - Introduction
• Quantum mechanics - Description of the theory
• Quantum mechanics - Quantum mechanical effects
• Quantum mechanics - Mathematical formulation
• Quantum mechanics - Interactions with other scientific theories
• Quantum mechanics - Applications of quantum theory
• Quantum mechanics - Philosophical consequences
• Quantum mechanics - History
• Quantum mechanics - Founding experiments
• Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia - Quantum mechanics

In 1900, Max Planck introduced the idea that energy is quantized, in order to derive a formula for the observed frequency dependence of the energy emitted by a black body. In 1905, Einstein explained the photoelectric effect by postulating that light energy comes in quanta called photons. The idea that each photon had to consist of energy in terms of quanta was a remarkable achievement as it effectively removed the possibility of black body radiation attaining infinite energy (which would be obviously ridiculous!) if it were to be explained ...

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Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - History

Bra-ket notation | Commutation relation | Heisenberg picture | Schrödinger picture | Wavefunction | Measurement in quantum mechanics | Semiclassical | Path integral | WKB approximation | Quantum logic | Quantum operation | Quantum field theory | Wightman axioms | Statistical ensemble | Wigner quasi-probability distribution Matrix mechanics, Hamiltonian | Particle in a box | Particle in a ring | Particle in a spherically symmetric potential | Quantum harmonic oscillator | Hydrogen ...

See also:

Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - Description of the theory

Quantum mechanics has had enormous success in explaining many of the features of our world. The individual behavior of the subatomic particles that make up all forms of matter - electrons, protons, neutrons, and so forth - can often only be satisfactorily described using quantum mechanics. Quantum mechanics is important for understanding how individual atoms combine to form chemicals. The application of quantum mechanics to chemistry is known as quantum chemistry. Quantum mechanics can provide quantitative insight into chemical bondin ...

See also:

Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - Applications of quantum theory

Quantum mechanics has had enormous success in explaining many of the features of our world. The individual behavior of the microscopic particles that make up all forms of matter - electrons, protons, neutrons, and so forth - can often only be satisfactorily described using quantum mechanics. Quantum mechanics is important for understanding how individual atoms combine to form chemicals. The application of quantum mechanics to chemistry is known as quantum chemistry. Quantum mechanics can provide quantitative insight into chemical bond ...

See also:

Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - Applications of quantum theory

The term quantum (Latin, "how much") refers to the discrete units that the theory assigns to certain physical quantities, such as the energy of an atom at rest (see Figure 1, at right). The discovery that waves could be measured in particle-like small packets of energy called quanta led to the branch of physics that deals with atomic and subatomic systems which we today call Quantum Mechanics. The foundations of quantum mechanics were established during the first half of the 20th century by Max Planck, Albert Einstein, Niels Bo ...

See also:

Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - Introduction

Since its inception, the many counter-intuitive results of quantum mechanics have provoked strong philosophical debate and many interpretations. Even fundamental issues such as Max Born's basic rules concerning probability amplitudes and probability distributions took decades to be appreciated. The Copenhagen interpretation, due largely to Niels Bohr, is the interpretation of quantum mechanics most widely accepted amongst physicists. According to it, the probabilistic nature of quantum mechanics predictions cannot be explained in term ...

See also:

Quantum mechanics, Quantum mechanics - Introduction, Quantum mechanics - Description of the theory, Quantum mechanics - Quantum mechanical effects, Quantum mechanics - Mathematical formulation, Quantum mechanics - Interactions with other scientific theories, Quantum mechanics - Applications of quantum theory, Quantum mechanics - Philosophical consequences, Quantum mechanics - History, Quantum mechanics - Founding experiments, Quantum mechanics - Notes

Read more here: » Quantum mechanics: Encyclopedia II - Quantum mechanics - Philosophical consequences