Tyndall beam

noun Physical Chemistry.

the visible path of light produced by the scattering action (Tyndall effect) of the particles in a colloidal solution on a beam of light passed through it.

Origin of Tyndall beam

named after J. Tyndall

British Dictionary definitions for tyndall effect

Tyndall effect

/ (ˈtɪndəl) /

noun

the phenomenon in which light is scattered by particles of matter in its path. It enables a beam of light to become visible by illuminating dust particles, etc

Word Origin for Tyndall effect

C19: named after John Tyndall (1820–93), Irish physicist