Search Result for "tyndall effect":
Wordnet 3.0

NOUN (1)

1. the phenomenon in which light is scattered by very small particles in its path; it makes a beam of light visible; the scattered light is mainly blue; 



WordNet (r) 3.0 (2006):

Tyndall effect
    n 1: the phenomenon in which light is scattered by very small
         particles in its path; it makes a beam of light visible;
         the scattered light is mainly blue