measure theory, an atom is a measurable set that has positive measure and contains no set of smaller positive measures. A measure that has no atoms is...
9 KB (1,565 words) - 02:21, 20 June 2025
Atomic theory is the scientific theory that matter is composed of particles called atoms. The definition of the word "atom" has changed over the years...
78 KB (10,108 words) - 21:09, 9 June 2025
Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically...
126 KB (12,976 words) - 23:44, 20 June 2025
u<X(\omega )\leq v.} Atom (measure theory) – A measurable set with positive measure that contains no subset of smaller positive measure Complementary event –...
8 KB (1,136 words) - 08:55, 14 January 2025
electrons. Atom(s) may also refer to: Atom (time), a medieval unit of time Atom (measure theory), a minimal measurable set Atom (order theory) Atomic formula...
4 KB (604 words) - 20:48, 21 May 2025
century) and others, developed distinctive theories of atomism, for example, involving momentary (instantaneous) atoms (kalapas) that flash in and out of existence...
65 KB (7,718 words) - 10:33, 4 May 2025
Bohr model (redirect from Bohr's theory of the hydrogen atom)
the hydrogen atom, compared to the valence shell model. As a theory, it can be derived as a first-order approximation of the hydrogen atom using the broader...
75 KB (10,385 words) - 21:41, 4 June 2025
Dirac delta function (redirect from Dirac's delta measure)
beam equation again results in piecewise polynomial deflection. Atom (measure theory) Degenerate distribution Laplacian of the indicator Uncertainty principle...
96 KB (14,230 words) - 16:33, 16 June 2025
Elementary event (category Experiment (probability theory))
the full power set. Atom (measure theory) – A measurable set with positive measure that contains no subset of smaller positive measure Pairwise independent...
3 KB (439 words) - 18:38, 12 June 2025
valence bond theory cannot explain. In molecular orbital theory, electrons in a molecule are not assigned to individual chemical bonds between atoms, but are...
28 KB (3,710 words) - 11:02, 31 May 2025
Big Bang (redirect from Primordial atom)
dark energy, called phantom dark energy theories, suggest that ultimately galaxy clusters, stars, planets, atoms, nuclei, and matter itself will be torn...
150 KB (15,975 words) - 15:26, 17 June 2025
measure-preserving dynamical system is an object of study in the abstract formulation of dynamical systems, and ergodic theory in particular. Measure-preserving...
23 KB (3,592 words) - 05:13, 10 May 2025
Phonon (redirect from Atom vibrations)
lattice is regular. Ri is the position coordinate of the ith atom, which we now measure from its equilibrium position. The sum over nearest neighbors...
48 KB (6,990 words) - 21:24, 8 June 2025
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral hydrogen atom contains a single positively charged proton in the...
39 KB (6,029 words) - 11:56, 21 June 2025
it. The discovery of this pattern led Dalton to develop the modern theory of atoms, as it suggested that the elements combine with each other in multiples...
9 KB (1,331 words) - 16:13, 11 September 2024
showed that this apparatus could be used to measure nuclear spin whenever the electronic configuration of the atom was known. The concept was applied by Rabi...
30 KB (3,465 words) - 19:06, 23 May 2025
learned that every atom has a nucleus where all of its positive charge and most of its mass is concentrated. They deduced this after measuring how an alpha...
100 KB (13,588 words) - 15:55, 9 June 2025
atom induce a corresponding redistribution of electrons in other atoms, such that the electron motions become correlated. While the detailed theory requires...
13 KB (1,615 words) - 19:08, 25 May 2025
space X. We can also say that the measure is a single atom at x; however, treating the Dirac measure as an atomic measure is not correct when we consider...
6 KB (640 words) - 04:31, 19 December 2022
spelling) or valency (British spelling) of an atom is a measure of its combining capacity with other atoms when it forms chemical compounds or molecules...
40 KB (2,914 words) - 12:59, 11 January 2025
A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number, n. The higher the value of n, the farther...
51 KB (5,774 words) - 06:45, 25 May 2025
In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than...
9 KB (955 words) - 19:37, 16 April 2025
In probability theory, a random measure is a measure-valued random element. Random measures are for example used in the theory of random processes, where...
9 KB (1,319 words) - 15:24, 2 December 2024
Quantum mechanics (redirect from Quantum theory of matter)
physical theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms.: 1.1 It...
99 KB (12,153 words) - 00:32, 16 June 2025
lasers while the source emits matter waves (the atoms) rather than light. Atom interferometers measure the difference in phase between atomic matter waves...
20 KB (1,957 words) - 08:29, 24 May 2025
History of quantum mechanics (redirect from Modern quantum theory)
gases. The successes of kinetic theory gave further credence to the idea that matter is composed of atoms, yet the theory also had shortcomings that would...
77 KB (9,437 words) - 04:25, 18 June 2025
the topological and quantum definitions of an atom in a molecule". Theoretical Chemistry Accounts: Theory, Computation, and Modeling. 105 (4–5): 276–283...
7 KB (912 words) - 15:22, 25 May 2025
Ergodicity (redirect from Ergodic measure)
founded on the formal definitions of measure theory and dynamical systems, and rather specifically on the notion of a measure-preserving dynamical system. The...
55 KB (8,944 words) - 02:31, 9 June 2025
the hydrogen atom, and three of the four known fundamental forces in the universe, may be modelled by symmetry groups. Thus group theory and the closely...
39 KB (5,086 words) - 11:47, 19 June 2025
Mole (unit) (redirect from Gramme-atom)
Because a dalton, a unit commonly used to measure atomic mass, is exactly 1/12 of the mass of a carbon-12 atom, this definition of the mole entailed that...
29 KB (3,712 words) - 16:30, 13 June 2025