Physics:Quantum atoms/spectral line: Difference between revisions

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{{Short description|Discrete frequency of light emitted or absorbed by an atom}}
{{Short description|Discrete frequency of light emitted or absorbed by an atom}}


[[Book:Quantum Collection/Matter (by scale)|← Back to Matter by scale]]
{{Quantum matter backlink|Atoms}}


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A '''spectral line''' is a discrete frequency or wavelength of light emitted or absorbed by an [[Physics:Quantum atoms/atom|atom]]. It arises from a [[Physics:Quantum atoms/transition|transition]] of an [[Physics:Quantum atoms/electron|electron]] between different [[Physics:Quantum atoms/energy level|energy levels]].
A '''spectral line''' is a discrete frequency or wavelength of light emitted or absorbed by an [[Physics:Quantum atoms/atom|atom]]. It arises from a [[Physics:Quantum atoms/transition|transition]] of an [[Physics:Quantum atoms/electron|electron]] between different [[Physics:Quantum atoms/energy level|energy levels]].
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[[File:Atomic_spectrum_lines.png|thumb|280px|Spectral lines produced by electron transitions between discrete energy levels in an atom.]]
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<div style="font-size:90%;">Spectral lines produced by electron transitions between discrete energy levels in an atom.</div>
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Revision as of 21:51, 17 May 2026


← Back to Atoms Book II

A spectral line is a discrete frequency or wavelength of light emitted or absorbed by an atom. It arises from a transition of an electron between different energy levels.

File:Atomic spectrum lines.png
Spectral lines produced by electron transitions between discrete energy levels in an atom.

Description

Each spectral line corresponds to a specific difference in energy between two energy levels. When an electron transitions to a lower level, a photon is emitted; when it moves to a higher level, a photon is absorbed.

The set of spectral lines forms an atomic spectrum, which is characteristic of each element.

Properties

See also

Table of contents (217 articles)

Index

Full contents

References


Author: Harold Foppele


Source attribution: Physics:Quantum atoms/spectral line

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