Absorption Spectrum
| Formula / Notation | E = hν; A = εlc |
|---|---|
| Also Known As | Atomic absorption spectrum; molecular absorption spectrum; dark-line spectrum; absorption spectroscopy |
What is Absorption Spectrum?
An absorption spectrum is the pattern of wavelengths (or frequencies) of electromagnetic radiation that are absorbed by a substance as radiation passes through it. Electrons in atoms or molecules absorb photons and transition to higher energy levels, producing dark lines or bands against a continuous background spectrum.
Formula & Notation
Other Names / Synonyms: Atomic absorption spectrum; molecular absorption spectrum; dark-line spectrum; absorption spectroscopy
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
An absorption spectrum is the pattern of wavelengths (or frequencies) of electromagnetic radiation that are absorbed by a substance as radiation passes through it. Electrons in atoms or molecules absorb photons and transition to higher energy levels, producing dark lines or bands against a continuous background spectrum.
Identifying unknown compounds; quantitative analysis (spectrophotometry); studying electron transitions; astronomical identification of elements in stars; quality control in pharmaceutical industry
Analytical technique requiring UV or IR radiation sources — UV radiation is hazardous to eyes and skin with prolonged exposure. Always use appropriate shielding and protective eyewear.
The formula or notation for Absorption Spectrum is: E = hν; A = εlc