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Atmospheric physics,
Atomic, molecular, and optical physics,
Atomic nuclei,
Atomic nucleus,
Atomic orbital model,
Atomic theory,
Auger effect,
Basics of quantum mechanics,
Binding energy,
Bohr atom model,
Bound state,
Charlotte Froese Fischer,
Chemical element,
Chemistry,
Clinton Joseph Davisson,
Condensed matter,
Conservation of energy,
David Bates (physicist),
Douglas Hartree,
Electron,
Electron configuration,
Electron shells,
Enrico Fermi,
Excited state,
Exoelectron,
Gas,
George Paget Thomson,
Ground state,
Harrie Massey,
International Standard Book Number,
Ionization,
Ions,
Isomeric shift,
J.J. Thomson,
Johannes Rydberg,
John C. Slater,
John Dalton,
Joseph von Fraunhofer,
Kinetic energy,
Laser,
M. J. Seaton,
Max Born,
Molecule,
Nevill Mott,
Niels Bohr,
Nuclear bomb,
Nuclear physics,
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Particle physics,
Periodic table,
Photon,
Physics,
Plasma (physics),
Quantum chemistry,
Quantum mechanics,
Selection rules,
Solid state physics,
Spectral line,
Spectroscopy,
Standard English,
Synonym,
Vladimir Fock,
World War II,
Atomic physics (or atom physics) is the field of physics that studies atoms as an isolated system of electrons and an atomic nucleus. It is primarily concerned with the arrangement of electrons around the nucleus and the processes by which these arrangements change. This includes ions as well as neutral atoms and, unless otherwise stated, for the purposes of this discussion it should be assumed that the term atom includes ions.
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Atmospheric physics
Atmospheric physics is the application of physics to the study of the atmosphere. Atmospheric physicists attempt to model Earth's atmosphere and the atmospheres of the other planets using fluid flow equations, chemical models, radiation balancing, and energy transfer processes in the atmosphere (as well as how these tie in to other systems such as the oceans). In order to model weather systems, atmospheric physicists employ elements of scattering theory, wave propagation models, cloud physics, statistical mechanics and spatial statistics which are highly mathematical and related to physics. It has close links to meteorology and climatology and also covers the design and construction of instruments for studying the atmosphere and the interpretation of the data they provide, including remote sensing instruments. At the dawn of the space age and the introduction of sounding rockets, aeronomy became a subdiscipline concerning the upper layers of the atmosphere, where dissociation and ionization are important.Atomic, molecular, and optical physics
Atomic, molecular, and optical physics is the study of matter-matter and light-matter interactions on the scale of single atoms or structures containing a few atoms. The three areas are grouped together because of their interrelationships, the similarity of methods used, and the commonality of the energy scales that are relevant. Physicists sometimes abbreviate the field as AMO physics. All three areas include both classical and quantum treatments.Atomic nuclei
The nucleus is the very dense region consisting of nucleons (protons and neutrons) at the center of an atom. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus, with a very small contribution from the orbiting electrons.Atomic nucleus
The nucleus is the very dense region consisting of nucleons (protons and neutrons) at the center of an atom. Almost all of the mass in an atom is made up from the protons and neutrons in the nucleus, with a very small contribution from the orbiting electrons.Atomic orbital model
The Atomic Orbital Model is the currently accepted model of the electrons in an atom. It is sometimes called the Wave Mechanics Model. In the atomic orbital model, the atom consists of a nucleus surrounded by orbiting electrons.These electrons exist in atomic orbitals, which are a set of quantum states of the negatively charged electrons trapped in the electrical field generated by the positively charged nucleus. Classically, the orbits can be likened to the planets orbiting the sun. However, the atomic orbital model can only be described by quantum mechanics, in which case the electrons are more accurately described as standing waves surrounding the nucleus.Atomic theory
In chemistry and physics, atomic theory is a theory of the nature of matter, which states that matter is composed of discrete units called atoms, as opposed to the obsolete notion that matter could be divided into any arbitrarily small quantity. It began as a philosophical concept in ancient Greece and India and entered the scientific mainstream in the early 19th century when discoveries in the field of chemistry showed that matter did indeed behave as if it were made up of particles.