Spectral Lines

In 1802, William Hyde Wollaston discovered dark lines in Newton

Atomic Spectral Lines

6.3: Line Spectra and the Bohr Model - Chemistry LibreTexts

Emission and Absorption Line Spectra - A Level Physics

Lesson Explainer: Emission and Absorption Spectra

Spectral classification

Lecture 12: The Classification of Stars

17.3.2 Emission Spectrum – xmPhysics

Patterns in Spectra Reveal More Quantization

File:Spectral-lines-continuous.svg - Wikipedia

Electromagnetic Radiation