Tyndall Effect / Rayleigh Scattering Intensity (Scattered light intensity I ∝ 1/λ⁴ (Rayleigh; colloidal Tyndall))
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Scattered light intensity I ∝ 1/λ⁴ (Rayleigh; colloidal Tyndall)
What each symbol means
| Symbol | What it stands for |
|---|---|
| I | Intensity of scattered light observed perpendicular to beam |
| λ | Wavelength of incident light in medium |
When to use this
Particle size << λ (dilute colloid, Rayleigh regime); explains blue sky / red sunset analogy in particle scattering; Tyndall effect is light scattering by colloidal particles.