text: The Tyndall Effect is caused by reflection of light by very small particles in suspension in a trasnparent medium. It is often seen from the dust in the air when sunlight comes in through a window, or comes down through holes in clouds. It is seen when headlight beams are visible on foggy nights, and in most X-File episodes when Moulder and Sculley check out some dark place with flashlights. im in chemistry too, and i just learned about it.  doing molarity, etc.?