Spectral Line
| Formula / Notation | ΔE = hν = hc/λ |
|---|---|
| Also Known As | Spectral emission line, absorption line, spectroscopic line, atomic line |
What is Spectral Line?
A spectral line is a dark or bright line in an otherwise uniform spectrum, resulting from absorption or emission of light at a specific wavelength (photon energy) corresponding to an electronic transition in an atom or molecule. Emission lines appear as bright lines; absorption lines appear as dark lines against a bright background. Each element has a unique spectral fingerprint used for identification.
Formula & Notation
Other Names / Synonyms: Spectral emission line, absorption line, spectroscopic line, atomic line
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A spectral line is a dark or bright line in an otherwise uniform spectrum, resulting from absorption or emission of light at a specific wavelength (photon energy) corresponding to an electronic transition in an atom or molecule. Emission lines appear as bright lines; absorption lines appear as dark lines against a bright background. Each element has a unique spectral fingerprint used for identification.
Elemental analysis (atomic emission/absorption spectroscopy). Astronomical spectroscopy (identifying stellar composition). Isotope identification. Plasma diagnostics. Chemical analysis (ICP-OES, AAS). Monitoring industrial processes. Laser design (specific wavelength amplification). Chemical detecti…
Spectroscopic instruments: UV and X-ray radiation hazards. Some spectroscopic techniques use high-voltage equipment. Flame atomic spectroscopy involves open flames and toxic sample solutions.
The formula or notation for Spectral Line is: ΔE = hν = hc/λ