Tyndall effect facts for kids
The Tyndall effect is when light is scattered by particles of matter in its path. It makes a beam of light visible by lighting the particles.
Under the Tyndall effect, the longer-wavelength light is more transmitted while the shorter-wavelength light is more reflected by scattering. In effect, blue light is scattered much more strongly than red light.
Images for kids
Flour suspended in water appears to be blue because only scattered light reaches the viewer and blue light is scattered by the flour particles more than red.
Tyndall effect Facts for Kids. Kiddle Encyclopedia.