Learning objective
Study the concepts of normal and anomalous dispersion and their connection with absorption.
Derive the formula $n(\omega)$ from the classical electron theory of dispersion.
Apply the Bouguer–Lambert–Beer law to calculate absorption and concentration.
Distinguish phase and group velocities and apply Rayleigh's formula.
Expected outcomes
Calculates the Cauchy constants and the Abbe number of a glass.
Finds the absorption coefficient, optical density and solution concentration using the Bouguer–Lambert–Beer law.
Calculates the group refractive index and the group velocity.
Explains, on the basis of classical theory, why anomalous dispersion is linked to absorption bands.
Activities
Lecture
Lecture · 55 min ·
required
Absorption of light. The Bouguer–Lambert–Beer law. Dispersion of light. Laws of dispersion. Normal and anomalous dispersion.
Practice · 55 min ·
required
Determination of the refractive index of a triangular prism
Laboratory · 1 h 20 min ·
optional
Observation of the dispersion of light in liquids
Laboratory · 1 h 20 min ·
optional
Classical theory of the dispersion of light
Self-study · 4 h 25 min ·
optional
Final test
Test · 20 min ·
required
· pass ≥ 70%
Completion conditions
- Lecture
- Absorption of light. The Bouguer–Lambert–Beer law. Dispersion of light. Laws of dispersion. Normal and anomalous dispersion.
- Final test — at least 70%