Physics:Quantum molecular spectroscopy - Revision history

WikiHarold: Restore missing Quantum reference definitions

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	== Overview ==		== Overview ==
	A molecule has several kinds of quantum energy. Its electrons occupy molecular electronic states, the nuclei vibrate about equilibrium geometries, and the molecule can rotate. To a useful approximation, the total molecular energy can be written as a sum of electronic, vibrational, and rotational contributions,<ref name="Bernath" /><ref name="Herzberg" />		A molecule has several kinds of quantum energy. Its electrons occupy molecular electronic states, the nuclei vibrate about equilibrium geometries, and the molecule can rotate. To a useful approximation, the total molecular energy can be written as a sum of electronic, vibrational, and rotational contributions,<ref name="Bernath">{{cite book \|last=Bernath \|first=Peter F. \|title=Spectra of Atoms and Molecules \|edition=3rd \|publisher=Oxford University Press \|year=2016 \|isbn=978-0-19-938257-6}}</ref><ref name="Herzberg">{{cite book \|last=Herzberg \|first=Gerhard \|title=Molecular Spectra and Molecular Structure: I. Spectra of Diatomic Molecules \|publisher=Van Nostrand Reinhold \|year=1950 \|isbn=978-0-442-03385-8}}</ref>

	:<math>E \approx E_\mathrm{electronic}+E_\mathrm{vibrational}+E_\mathrm{rotational}.</math>		:<math>E \approx E_\mathrm{electronic}+E_\mathrm{vibrational}+E_\mathrm{rotational}.</math>
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	{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also/Matter}}		{{#invoke:PhysicsQC\|tocHeadingAndList\|Physics:Quantum basics/See also/Matter}}

	=References=		= References =
	{{reflist\|3}}		{{reflist\|3}}

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	~~{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}~~



	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}
	{{Quantum matter backlink\|Molecules}}		{{Quantum matter backlink\|Molecules}}
			{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}
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	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}I		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}

	{{Quantum matter backlink\|Molecules}}		{{Quantum matter backlink\|Molecules}}

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	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}~~Book II~~		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}I

	{{Quantum matter backlink\|Molecules}}		{{Quantum matter backlink\|Molecules}}

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	{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}		{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}



	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}Book II

	{{Quantum matter backlink\|Molecules}}		{{Quantum matter backlink\|Molecules}}

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	{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}		{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}

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	{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}		{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}


	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}

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	{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}		{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}

	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}

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			{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}
	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}

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	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}

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	<div style="flex:1; line-height:1.45; color:#006b45; column-count:2; column-gap:32px; column-rule:1px solid #b8d8c8;">		<div style="flex:1; line-height:1.45; color:#006b45; column-count:2; column-gap:32px; column-rule:1px solid #b8d8c8;">
	'''~~Quantum~~ molecular spectroscopy''' is the study of how ~~[[Physics:Quantum molecular structure\|~~molecules]] absorb, emit, or scatter radiation as they move between quantized molecular energy states. In quantum mechanics, molecular spectra arise because the allowed rotational, vibrational, and electronic states of a molecule are discrete or partly discrete. The observed spectral lines and bands therefore reveal information about bond lengths, force constants, molecular geometry, electronic structure, and interactions with the environment.~~<ref name="Bernath">{{cite book \|last=Bernath \|first=Peter F~~. ~~\|title=Spectra~~ of Atoms and Molecules \|edition=3rd \|publisher=Oxford University Press \|year=2016 \|isbn=978-0-19-938257-6}}</ref><ref name="Herzberg">{{cite book \|last=Herzberg \|first=Gerhard \|title=Molecular Spectra and Molecular Structure: I. ~~Spectra of Diatomic Molecules \|publisher=Van Nostrand Reinhold \|year=1950 \|isbn=978-0-442-03385-8}}</ref>~~		'''molecular spectroscopy''' is a Book II topic in the Quantum Collection. Quantum molecular spectroscopy is the study of how molecules absorb, emit, or scatter radiation as they move between quantized molecular energy states. In quantum mechanics, molecular spectra arise because the allowed rotational, vibrational, and electronic states of a molecule are discrete or partly discrete. The observed spectral lines and bands therefore reveal information about bond lengths, force constants, molecular geometry, electronic structure, and interactions with the environment. Quantum molecular spectroscopy is the study of how molecules absorb, emit, or scatter radiation as they move between quantized molecular energy states. In quantum mechanics, molecular spectra arise because the allowed rotational, vibrational, and electronic states of a molecule are discrete or partly discrete.

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	{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}		{{Quantum article nav\|previous=Physics:Quantum degenerate orbitals\|previous label=Degenerate orbitals\|next=Physics:Quantum molecular vibration\|next label=Molecular vibration}}



	{{Short description\|Study of molecular energy levels using electromagnetic spectra}}		{{Short description\|Study of molecular energy levels using electromagnetic spectra}}Book II

	{{Quantum matter backlink\|Molecules}}		{{Quantum matter backlink\|Molecules}}