Tyndall Effect
| Formula / Notation | Tyndall scattering: λ(scattered) blue > red; I ∝ λ⁻⁴ |
|---|---|
| Also Known As | Tyndall scattering, colloidal scattering, light scattering in colloids |
What is Tyndall Effect?
The phenomenon whereby light is scattered by particles in a colloid, making the beam visible. Named after John Tyndall who described it in 1869. This effect distinguishes colloidal dispersions (particles 1-1000 nm) from true solutions (particles < 1 nm) and from coarse suspensions.
Formula & Notation
Other Names / Synonyms: Tyndall scattering, colloidal scattering, light scattering in colloids
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
The phenomenon whereby light is scattered by particles in a colloid, making the beam visible. Named after John Tyndall who described it in 1869. This effect distinguishes colloidal dispersions (particles 1-1000 nm) from true solutions (particles < 1 nm) and from coarse suspensions.
The Tyndall effect is used in nephelometry to measure the concentration of suspended particles in water quality testing. It is the principle behind light-scattering particle counters used in cleanrooms and pharmaceutical manufacturing. Smoke detectors use light scattering to detect aerosol particles…
The Tyndall effect is a physical phenomenon with no inherent safety hazard. Colloidal aerosols that exhibit this effect may however be respiratory hazards depending on the nature of the particles.
The formula or notation for Tyndall Effect is: Tyndall scattering: λ(scattered) blue > red; I ∝ λ⁻⁴