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de Broglie wavelength

Overview page. Subjects: Chemistry — Physics.

The wavelength of the wave associated with a moving particle. The wavelength (λ) is given by λ = h/mv, where h is the Planck constant, m is the mass of the particle, and v its velocity. The...

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electromagnetic radiation

Overview page. Subjects: Chemistry.

The energy that is transmitted through space in the form of electromagnetic waves, which include light, radio waves, X‐rays, and gamma rays. See also radiation.

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Erwin Schrödinger

Overview page. Subjects: Science and Mathematics.

(1887–1961)

Austrian physicist, who became professor of physics at Berlin University in 1927. He left for Oxford to escape the Nazis in 1933, returned to Graz in Austria in 1936,...

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Hilbert space

Overview page. Subjects: Chemistry — Physics.

A linear vector space that can have an infinite number of dimensions. The concept is of interest in physics because the state of a system in quantum mechanics is represented by a vector in...

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Linus Pauling

Overview page. Subjects: Science and Mathematics.

(1901–1994)

US chemist, who was awarded the 1954 Nobel Prize for Chemistry for his work on the nature of the chemical bond as well as the 1962 Nobel Peace Prize for his work on...

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Louis-Victor Pierre Raymond de Broglie

Overview page. Subjects: Science and Mathematics.

(1892–1987) French physicist,

who taught at the Sorbonne in Paris for 34 years. He is best known for his 1923 theory of wave–particle duality (see also de Broglie wavelength),...

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matrix mechanics

Overview page. Subjects: Chemistry — Physics.

A formulation of quantum mechanics using matrices (see matrix) to represent states and operators. Matrix mechanics was the first formulation of quantum mechanics to be stated (by Werner...

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orbital

Overview page. Subjects: Chemistry — Physics.

A region in which an electron may be found in an atom or molecule. In the original Bohr theory of the atom the electrons were assumed to move around the nucleus in circular orbits, but...

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quantization

Overview page. Subjects: Computing.

The process of constructing a discrete representation of a quantity that is usually regarded as continuous (see discrete and continuous systems). For example, the measurement of the...

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quantum mechanics

Overview page. Subjects: Physics.

A system of mechanics that was developed from quantum theory and is used to explain the properties of atoms and molecules. Using the energy quantum as a starting point it incorporates...

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