Spectral Line definition of Spectral Line in the Free Online Encyclopedia.

spectral line [′spek·trəl ‚līn]

(spectroscopy)

A discrete value of a quantity, such as frequency, wavelength, energy, or mass, whose spectrum is being investigated; one may observe a finite spread of values resulting from such factors as level width, Doppler broadening, and instrument imperfections. Also known as spectrum line.

Spectral Line

a thin line in an optical spectrum. Each such line can be characterized by a certain wavelength λ or frequency v = c/λ, where c is the speed of light. Spectral lines are observed in emission spectra as bright (colored) lines on a dark background and in absorption spectra as dark lines on a bright background. Each spectral line corresponds to a definite quantum transition in an atom, molecule, or crystal. Spectral lines are not strictly monochromatic: each one has a certain width Δλ.

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No references found	Data for about 3300 spectral lines of 24 ions are tabulated. Data available on atomic spectral tables for the Chandra X-Ray ... by Journal of Research of the National Institute of Standards and Technology The radiation from the exchange is then measured and analyzed, generating spectral lines for quantitative analysis. Surprisingly valuable: the hollow cathode lamp market by Instrument Business Outlook Such an instrument will be useful for studying the distinctive spectral features of hot, rapidly rotating B[e] supergiant stars and for measuring shifts in the positions of spectral lines to determine the radial velocities of stars in binary systems. Low-budget stellar spectroscopy by Peterson, Ivars / Science News	Spectra 70 Spectra Pritchard photometer Spectral Analysis of Linear Operators Spectral Analysis of Speech Sounds spectral approximation Spectral Band Replication spectral bands spectral bandwidth spectral centroid spectral characteristic spectral class spectral classification Spectral Classification of Stars spectral color Spectral Concentration spectral density spectral dimension spectral directional reflectance factor spectral emissivity spectral energy distribution spectral extinction spectral factorization spectral function spectral hygrometer spectral irradiance Spectral Line Spectral Lines, Width of spectral locus spectral luminosity classification Spectral Luminous Efficacy spectral luminous efficiency spectral measure spectral photography spectral power distribution spectral pyrometer spectral radiance spectral radiance factor spectral radius spectral reflectance spectral regions Spectral Resolution of a Function Spectral Resolution of a Linear Operator Spectral Resolution of a Random Function spectral response spectral selective photoelectric effect Spectral Sensitivity Spectral Series spectral temperature Spectral Term spectral theorems spectral transmission	spectral factorization Spectral FEG Resequencing Spectral Flame Analyzer Spectral Flame Analyzers spectral function Spectral Gamma Logging System Spectral Gamma Ray Spectral Gamma Ray Tool Spectral Graph Partitioning Algorithm Spectral Hole Burning spectral hygrometer Spectral Imagery Technology Applications Center SPectral Imaging of Correlative Events Spectral Information Divergence Spectral Information Measure Spectral Information Technology Applications Center Spectral Infrared Interferometric Telescope Spectral Infrared Remote Imaging Transition Testbed Spectral irradiance Spectral irradiance Spectral Irradiance Model Spectral karyotyping Spectral karyotyping Spectral karyotyping Spectral karyotyping Spectral Lanczos Decomposition Method Spectral Latent Heating Spectral lemur Spectral Line Spectral line broadening Spectral line broadening Spectral line width Spectral line width Spectral lines Spectral lines Spectral Lines, Width of Spectral linewidth spectral locus spectral luminosity classification spectral luminous efficacy spectral luminous efficiency spectral luminous efficiency spectral luminous efficiency Spectral measure Spectral Mesosphere Lower Thermosphere Model Spectral Methods and Multirate Signal Processing Spectral Ocean Wave Model Spectral Operations Resource Center Spectral Optical Coherence Tomography Spectral Phase Interferometry for Direct Electric-Field Reconstruction spectral photography Spectral power density Spectral power distribution Spectral power distribution Spectral power distributions Spectral Presaturation by Inversion Recovery Spectral Processing and Manipulation Spectral Properties of Fluorescein in Solvent spectral pyrometer

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Data for about 3300 spectral lines of 24 ions are tabulated.

Data available on atomic spectral tables for the Chandra X-Ray ... by Journal of Research of the National Institute of Standards and Technology

The radiation from the exchange is then measured and analyzed, generating spectral lines for quantitative analysis.

Surprisingly valuable: the hollow cathode lamp market by Instrument Business Outlook

Such an instrument will be useful for studying the distinctive spectral features of hot, rapidly rotating B[e] supergiant stars and for measuring shifts in the positions of spectral lines to determine the radial velocities of stars in binary systems.

Low-budget stellar spectroscopy by Peterson, Ivars / Science News

Spectra 70

Spectra Pritchard photometer

Spectral Analysis of Linear Operators

Spectral Analysis of Speech Sounds

spectral approximation

Spectral Band Replication

spectral bands

spectral bandwidth

spectral centroid

spectral characteristic

spectral class